Core: Unify __NO_INIT macro across toolchains

[MiloradCvjetkovic]

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Test Results

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0 runs   - 16 464  0 ✔️  - 10 632  0 💤  - 5 832  0 ❌ ±0 

Results for commit f1dcf0d. ± Comparison against base commit e32b987.

♻️ This comment has been updated with latest results.

[JonatanAntoni]

This needs to be aligned with the linker scripts. It is going to break existing implementations based on the new macro.

https://github.com/Open-CMSIS-Pack/devtools/tree/main/tools/projmgr/templates

[MiloradCvjetkovic]

It only impacts ac6_linker_script.sct and it could be made that both .bss.noinit and .noinit are supported.
Actually, it would be best that supported are .bss.noinit* and ,noinit*, as for example Fault component uses section name .noinit.fault .
BTW, gcc_linker_script.ld and clang_linker_script.ld do not contain provisions for the .noinit section at all.

[ghost]

Provisions for .noinit should be added to gcc_linker_script.ld and clang_linker_script.ld if they are not already contained .

[ghost]

are linker scripts which need to be updated part of this PR?