Merge pull request #6273 from bulislaw/update_cmsis_5.3 ...

Update cmsis/rtx to version 5.3

Addressed review comments ...

1. LP ticker limiation note
2. Use read_us in mbed_uptime function
3. Doxygen recommendations
4. Use us_timestamp_t instead uint64_t
5. Astyle changes

CPU statistics addition ...

API to get CPU stats like sleep/deepsleep time, uptime and idle time.
These can be used by application to know the CPU Usage runtime.

Rename __DOMAIN_NS to DOMAIN_NS to match CMSIS

Merge pull request #6630 from OpenNuvoton/nuvoton_add_nonsecure_flash ...

Support secure/non-secure flash IAP for Cortex-M23/M33

Add comment for target_config/target_config_ns in flash IAP

Add handling for synchronized low power tickers ...

Some low power tickers take multiple cycles of the low power clock
to set a compare value. Because of this if the compare value is set
twice back-to-back these implementations will block until that time
has passed. This can cause system stability issues since interrupts
are disabling for this time.

To gracefully support this kind of hardware this patch adds code
to prevent back-to-back writes to the hardware. It does this by
recording the low power clock cycle of the initial write. If any
writes come in too soon after this initial write the microsecond
ticker is used to schedule the new write in the future when the
hardware is ready to accept a new value.

To enable this feature on a target the macro LOWPOWERTIMER_DELAY_TICKS
must be set to the number of low power clock cycles that must elapse
between writes to the low power timer.

Refine code with MBED_NONSECURE_ENTRY in flash IAP

Refactor code for non-secure flash check in flash IAP

Replace with MBED_NONSECURE_ENTRY for all-toolchain secure gateway functions in flash IAP

Support secure/non-secure flash IAP for Cortex-M23/M33

Merge pull request #6373 from 0xc0170/fix_flash_docs ...

flash: add docs for user defined data

Merge pull request #6377 from scartmell-arm/feature-deep-sleep-tracing-filename-fix ...

Replace runtime strip_path function with compiler intrinsic equivalents

flash: add docs for user defined data ...

This should make some of the data more clear to a user

Merge pull request #6372 from bulislaw/fix_doxy_itm ...

Fix doxygen for ITM HAL

Refactor sleep tracing driver identifier to be pointer to the driver filepath. ...

The use of __FILE__ macro to get a usable identifier from the driver path
causes the path of the file to be stored in the .text region of the binary.
Given that this remains for the entire duration of the program, storing a
pointer to this string as an identifier is more efficient than copying the
contents of the string during lookup/insertion.

Merge pull request #6149 from bmcdonnell-ionx/typos ...

Fix typos in the files

Replace runtime strip_path function with compiler intrinsic equivalents ...

Sleep manager tracing strips the path from filenames and uses the result as an
identifier to track drivers that unlock/lock sleep tracing. Replace the function
that strips the path from the string, replace this function with a new macro,
__FILENAME__ which performs the same action in a compiler specific manner.

- GCC_ARM, use __builtin_strrchr which is optimized out at compile time.
- ARM, use __MODULE__ which returns the filename without path.
- IAR, specifiy the --no_path_in_file_macros compiler flag.

Fix doxygen for ITM HAL

Fix review comments and merge issues

Fix merge conflict mishap

Return pointer to sleep tracker array element instead of an index

Split find/insert sleep tracker function into two seperate functions. ...

Throw an error when trying to unlock driver that was not previously locked.

Rename SLEEP_STATS_ENABLED to SLEEP_TRACING_ENABLED

Remove newline printf from sleep manager

Remove '_PACKED' keyword from sleep statistic structure

Rename SLEEP_PROFILING_ENABLED to MBED_SLEEP_STATS_ENABLED

Add optional tracing to sleep manager lock/unlock ...

Add tracing output to console to track when drivers lock and unlock deep
sleep. Tracing output is enabled by configuring the
'SLEEP_PROFILING_ENABLED' at compile time.

- Wrapped sleep_manager_lock/sleep_manager_unlock in a macro to
conditionally call tracing functions when 'SLEEP_PROFILING_ENABLED' is
set.
- Define a global structure to track driver names and how many locks
they hold in the sleep manager.

Add system_reset() function to Mbed OS

typos