Revert "TESTS: Reduce allocate memory size" ...

This reverts commit 6649e95.

In the malloc test, `ALLOC_ARRAY_SIZE` defines the *capacity* of array
that stores pointers to `malloc`'d buffers. It is *not* the number
of allocations.

In an ideal scenario, the test makes as many allocations as possible
until the heap runs out and malloc() returns NULL. So revert the
capacity of the array of pointers from 50 back to 100 so this array
is less likely to run out before the heap does.

Workaround for a bug in malloc() from newlib-nano 4.1.0 ...

The commit 84d0689 "Nano-malloc: Fix for unwanted external heap
fragmentation" from newlib 4.1.0 introduced several optimizations,
one of which is as follows:

When the last chunk in the free list is smaller than requested,
nano_malloc() calls sbrk(0) to see if the heap's current head is
adjacent to this chunk, and if so it asks sbrk() to allocate the
difference in bytes only and expands the current chunk.

This doesn't work if the heap consists of non-contiguous regions.
sbrk(0) returns the the current region's head if the region has any
remaining capacity. But if this capacity is not enough for the second
(non-trivial) call to sbrk() described above, allocation will happen
from the next region if available. Expanding the current chunk won't
work and will result in a segmentation fault.

So this optimization needs to be reverted in order to bring back
compatibility with non-contiguous heaps. Before the next version
of newlib becomes available and gets updated in the GCC Arm Embedded
Toolchain, we work around this issue by including the fix in Mbed OS.
The linker prioritizes malloc() from the project to the one from the
toolchain.

Merge pull request #15043 from jamesbeyond/click_fix ...

FIX: update click version to fix scancode

FIX: update click version to fix scancode

Merge pull request #15017 from hallard/STM32WL_HP_optimal ...

STM32WL fixed current consumption for mode RBI_CONF_RFO_HP

Merge pull request #15024 from OpenNuvoton/nuvoton_m2354_tfm_sdh ...

M2354: Enhance TF-M SDH stability

Merge pull request #14926 from katherrafi/hal_callback_override ...

Eth: STM32: Overriding HAL callbacks in stm32xx

Merge pull request #15020 from OpenNuvoton/nvt_can_mask ...

Nuvoton: M480/M451 CAN API support mask feature

M2354: Enhance TF-M SDH stability ...

1.  Lower TF-M SDH clock to avoid premature timeout
2.  Re-initialize TF-M SDH on (timeout) failure

Eth: STM32: Overriding HAL callbacks in stm32xx ...

This commit enables the Overriding of HAL callbacks and IRQHandler
in stm32xx_emac.cpp. Hence the user can have their own
implementations of callbacks and IRQHandler functions.

Signed-off-by: Kather Rafi Ibrahim <katherrafi.i@hcl.com>

added optimal settings for RFO_HP only ...

fixed wrong help values name

added detailled comments

fix style-check

fix style-check

M451 CAN API support mask feature

M480 CAN API support mask feature

Merge pull request #15016 from 0xc0170/fix-iar-cmsis-update ...

Fix IAR cmsis update breakage

Merge pull request #15018 from jeromecoutant/PR_FLASHTEST ...

hal-tests-tests-mbed_hal-flash compilation warning

Merge pull request #15012 from felser/MTS_DRAGONFLY_L496VG ...

Add platform MTS_DRAGONFLY_L496VG

hal-tests-tests-mbed_hal-flash compilation warning

cmsis importer: add IAR fix for .S files

cmsis: fix iar asm build error with including header ...

mbed-cli1 does not pass -I to IAR for iarasm (comparing to other toolchains). Because old tools are frozen,
we implement this workaround for fixing the build.

We use preprocessor macros that are passed to .S files anyway, so we do not loose anything but we do diverge again from CMSIS, for now..

Add platform MTS_DRAGONFLY_L496VG

Update Mbed version block

Merge pull request #14956 from jeromecoutant/PR_SCRIPT_UPDATE ...

STM32_gen_PeripheralPins script update

Merge pull request #14988 from npal-cy/pr/swintegration-501 ...

CYW43XXX Cordio HCI driver: update BT power up sequences to remove redundant delay (500ms) during HCIDrive initialization

Merge pull request #15008 from jamesbeyond/malloc_fix ...

TESTS: Reduce allocate memory size

Merge pull request #15000 from SamuA-AP/fix-can-api-filters ...

Fix Extended Message Filter count in STM CAN API

Merge pull request #15006 from mikaleppanen/irq_disable_eth_init ...

Disabled interrupts on smt32f7 and stm32h7 before calling disable data cache

Merge pull request #14935 from jeromecoutant/PR_IAR ...

mbed_retarget: enable IAR build

Merge pull request #14993 from hazzlim/unit_test_support ...

Add boilerplate unit test code to currently untested modules

Merge pull request #15002 from ladislas/ladislas/bugfix/interface-digitalin-missing-include ...

Add missing include for PinNames.h

TESTS: Reduce allocate memory size