Remove all source files exclusive to Arm Compiler and IAR (#159) ...

* Remove all source files exclusive to Arm Compiler and IAR

* Also remove 'TOOLCHAIN_ARM'

* Remove targets.json entries for ARM and IAR

GPIO: Use uintptr_t for gpio_irq_api context ...

The HAL gpio_irq_api stores object IDs, which serve as a form of context
for the dispatch of the interrupt handler in the drivers level
InterruptIn Class. The way this is achieved is that the InterruptIn
Class casts its address to uint32_t, which is stored as the ID.
This results in compilation failure when the size of an object pointer
is greater than uint32_t, for example when building on a PC for unit
testing.

In order to allow Unit Testing of the InterruptIn Class, we replace the
use of uint32_t with uintptr_t (type capable of holding a pointer),
which allows portability and expresses intentions more clearly.
In aid of this latter goal, we also replace the use of the name "id"
with "context", to improve clarity - these are addresses of the context
related to that callback.

CAN: Use uintptr_t for can_irq_ids ...

The HAL can_api stores an array of IDs in order to dispatch interrupts
to the correct CAN object. The drivers level CAN Class casts a pointer
to itself to an uint32_t, which is stored as the ID and then cast back
to a CAN * in order to call the correct handler. This results in
compilation failure when the size of an object pointer is greater than
uint32_t, for example when building on a PC for unit testing.

In order to allow Unit Testing of the CAN Class, we replace the use of
uint32_t with uintptr_t (type capable of holding a pointer), which
allows portability and expresses intentions more clearly. In aid of this
latter goal, we also replace the use of the name "id" with "context",
to improve clarity. These are addresses of the context related to that
callback.

Remove include dependency on `USBDevice_Types.h` ...

mbed-usb (which provides `USBDevice_Types.h`) is a higher-level USB
library in Mbed-OS that sits on top of the HAL. Targets should not
implement the HAL and use higher-level libraries, hence, the dependency
should be removed. This dependency also causes errors when building with
the bare-metal profile.

CMake: Add `.cpp` files to target_sources ...

C++ files were excluded from target_sources, this meant that those files
were being missed entirely during the build process. This adds any files
that may have missed in the first commit.

Update UART pin names & add MBED_CONF_TARGET_STDIO_UART overrides

Add standard pin-names validation script & tests

CMake: Create CMSIS library targets to remove dependency on MBED_TARGET_LABELS ...

This goes towards eventually removing reliance on targets.json to specify
the requirements of Mbed targets.

CMake: refactor Renesas targets ...

Refactor all Renesas targets to be CMake buildsystem targets. This removes
the need for checking MBED_TARGET_LABELS repeatedly and allows us to be
more flexible in the way we include MBED_TARGET source in the build.

A side effect of this is it will allow us to support custom targets
without breaking the build for 'standard' targets, as we use CMake's
standard mechanism for adding build rules to the build system, rather
than implementing our own layer of logic to exclude files not needed for
the target being built. Using this approach, if an MBED_TARGET is not
linked to using `target_link_libraries` its source files will not be
added to the build. This means custom target source can be added to the
user's application CMakeLists.txt without polluting the build system
when trying to compile for a standard MBED_TARGET.

Merge pull request #14035 from harmut01/remove_rz_targets ...

Remove unsupported Renesas target include files

Remove unsupported Renesas target include files ...

MBED_MBRZA1LU, MBED_MBRZA1H, and MBED_MBRZA2M are no longer supported by
Renesas.

CMake: Port Renesas targets to CMake ...

Add targets subdirectory to high level CMake configuration file and
create new configurations for MCUs and individual targets. Change the
interpreter in the ARM scatter file to armclang, which is required for
CMake. Remove private and public interfaces in emac target
configuration. Ensure that all targets build on the arm gcc compiler and
arm compiler.

Merge pull request #14000 from RyoheiHagimoto/grmango-oram-calib ...

Add octa RAM calibration feature to GR-MANGO.

Modified license and code style.

Added octa RAM calibration feature to GR-MANGO. ...

Modified files in the sub-directory of targets/TARGET_RENESAS/TARGET_RZ_A2XX/.

Added Apache-2.0 license to the files in r_can directory.

Added CAN function to RZ/A2M.

Updated periperal definition files for Renesas RZ/A2M

Merge pull request #13747 from RyoheiHagimoto/modify_renesas_deepsleep ...

Renesas: fix timing to wait UART completion in deep sleep function

Fixed I2C slave bugs on Renesas RZ/A series: ...

Added the register operation when received the slave address.

Fixed I2C slave bugs on Renesas RZ/A series. ...

Fixed following I2C slave bugs on Renesas RZ/A series:
 - Send an incorrect value during slave mode.
 - The behavior for the restart condition is wrong.

Add SPDX license identifier to Arm files ...

Add license identifier to files which Arm owns the copyright to,
and contain either BSD-3 or Apache-2.0 licenses. This is to address
license errors raised by scancode analysis.

Add license notice to Arm copyrighted source files ...

Scancode found missing license notices in our source files. This commit
addresses those issues by adding an Apache-2.0 notice to source files
highlighted.

Modified the timing to wait UART completion in deep sleep function. ...

Moved waiting UART transmission completion to the out of critical
section. This is issued by the following pull request.
https://github.com/ARMmbed/mbed-os/pull/11816

pwmout - fixed compile errors

pwmout - RZ_A2XX - add read methods for period and pulsewidth

pwmout - RZ_A1XX - add read methods for period and pulsewidth

Modifed some source files for GR-MANGO. ...

Aligned with the astyle rule.
Deleted old ARM5 check.

Added GR-MANGO to be a target. ...

Passed GreenTea CI.
Added RZ_A2XX and GR_MANGO to targets.json.
Added RZ_A2XX to mbedlib.json in lwipstack and netsocket/ppp.
Added TARGET_RZ_A2XX directory to targets/TARGET_RENESAS.
Added TARGET_RENESAS_EMAC directory to features/netsocket/emac-drivers.
Moved TARGET_RZ_A1_EMAC directory into the TARGET_RENESAS_EMAC directory below and renamed to TARGET_RZ_A1XX.
Added TARGET_RZ_A2XX directory to features/netsocket/emac-drivers/TARGET_RENESAS_EMAC.

Remove vk_rz_a1h target