NXP backend: Fix Copyright findings

[StrycekSimon]

Summary

Fixes Copyright notes in NXP co-authored files.

cc @robert-kalmar @jirioc

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/13125

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❗ 1 Active SEVs

There are 1 currently active SEVs. If your PR is affected, please view them below:

• ghstack-mergeability-check and Check labels failing with 'Resource not accessible by integration'

❌ 2 New Failures, 1 Unrelated Failure

As of commit 8968d38 with merge base 90ff059 ():

NEW FAILURES - The following jobs have failed:

• Build documentation / build (buck2) / Build doc (gh)
  At least one of the pre-conditions you specified did not hold
• pull / test-moshi-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 78df02735b59aa6a6a045a3aa94b5707432dc22f88a7bb5796f28e879a2fd7f1 /exec failed with exit code 1

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / test-openvino-linux / linux-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'quantized_decomposed' object has no attribute 'convert_element_type'

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[StrycekSimon]

@pytorchbot label "release notes: nxp"