!imxrt: Changes related to RTT

[jmaksymowicz]

Add reporting of map name in meminfo syscall.

Motivation and Context

These features allow implementation of RTT in a more elegant way, with RTT details defined in PLO being passed through to the userspace driver. Using this it is also possible to have console over RTT continuously, using the same buffers, from system start.

NOTE: This change changes the meminfo_t struct used for the meminfo syscall. Existing code using this syscall may need to be recompiled.

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: imxrt1170

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).
• I will merge this PR by myself when appropriate.

[github-actions]

Unit Test Results

7 723 tests  ±0   7 008 ✅ ±0   37m 29s ⏱️ - 2m 18s
  443 suites ±0     715 💤 ±0 
    1 files   ±0       0 ❌ ±0 

Results for commit 03c1db5. ± Comparison against base commit 52e5cf1.

♻️ This comment has been updated with latest results.

[Darchiv]

LGTM