arch: migrate to SPDX identifier

[jerpelea]

Summary

Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.

Impact

SBOM

Testing

CI

[nuttxpr]

[Experimental Bot, please feedback here]

No, this PR description does not adequately meet the NuttX requirements. While it touches on some points, it lacks crucial details. Here's a breakdown:

• Summary: While it states the "why," it's vague about the "what" and "how." Which files are changed? How are SPDX identifiers being added? What tools are being targeted? The summary needs more concrete information. Issue/PR references are missing.

• Impact: Simply stating "SBOM" is insufficient. It needs to address all the listed impact categories with specific "YES/NO" answers and explanations where applicable. For example:

  • Is new feature added? YES (SBOM generation capability)
  • Impact on user? Potentially YES (if SBOM generation becomes part of the build process, users may need to configure it). More details are required.
  • Impact on build? Possibly YES. Needs explanation.
  • ...and so on for all categories.

• Testing: "CI" is not acceptable. The PR description must include:

  • Specific build host details (OS, CPU architecture, compiler version)
  • Specific target details (architecture, board, configuration)
  • Relevant log snippets demonstrating the functionality before and after the change, not just a general statement about CI. If the change is specifically to facilitate SBOM generation, show how the SBOM output differs before and after the change.

In short, the PR description needs to be significantly expanded to be considered acceptable according to the NuttX requirements. It needs to be more specific and address all the listed points in detail.

[hartmannathan]

Suggested change

	* arch/tricore/src/tc3xx/tc3xx_timerisr.c
	* arch/tricore/src/tc3xx/tc3xx_dummy.c

[hartmannathan]

Suggested change

	/****************************************************************************
	* Private Functions
	****************************************************************************/
	/* None */
	/****************************************************************************
	* Public Functions
	****************************************************************************/
	/* None */

[xiaoxiang781216]

let's fix the style warning:
https://github.com/apache/nuttx/actions/runs/12085711167/job/33703502195?pr=14996

[hartmannathan]

let's fix the style warning: https://github.com/apache/nuttx/actions/runs/12085711167/job/33703502195?pr=14996

The fixes are above, @jerpelea can commit the suggested fixes. It should remove the errors.