armv8m: Add MCX N94x target, fix armv8m build

[agkaminski]

JIRA: RTOS-881

Description

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (refactoring, style fixes, git/CI config, submodule management, no code logic changes)

How Has This Been Tested?

• Already covered by automatic testing.
• New test added: (add PR link here).
• Tested by hand on: (mcxn94x).

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing linter checks and tests passed.
• My changes generate no new compilation warnings for any of the targets.

Special treatment

• This PR needs additional PRs to work (list the PRs, preferably in merge-order).
  Add armv8m33-mcxn94x-frdm target phoenix-rtos-project#1120
  armv8m: Add MCX N94x target plo#337
  Add MCX N94x target phoenix-rtos-utils#222
  Add mcxisp tool phoenix-rtos-hostutils#55
  Add MCX N94x target phoenix-rtos-filesystems#132
  Add MCX N94x multidrv phoenix-rtos-devices#508
  Add armv8m support phoenix-rtos-build#195
  Add armv8m architecture support libphoenix#371
• I will merge this PR by myself when appropriate.

[github-actions]

Unit Test Results

7 700 tests   6 985 ✅  37m 43s ⏱️
  436 suites    715 💤
    1 files        0 ❌

Results for commit 19d7699.

♻️ This comment has been updated with latest results.

[lukileczo]

LGTM