NXP backend: Test max_pool2d with new Neutron flow.

[MartinPavella]

Summary

Reflect the requirements of the new Neutron MLIR flow for the max_pool2d operator in NXP backend.

Test plan

Unit tests provided.

cc @robert-kalmar @JakeStevens @digantdesai

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/19272

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

✅ You can merge normally! (7 Unrelated Failures)

As of commit 882b5e0 with merge base 1debeb6 ():

FLAKY - The following job failed but was likely due to flakiness present on trunk:

• pull / test-arm-cortex-m-size-test (zephyr-preset) / linux-job (gh) (matched linux rule in flaky-rules.json)
  The process '/usr/bin/git' failed with exit code 1

BROKEN TRUNK - The following jobs failed but was present on the merge base:

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

• pull / unittest / macos / macos-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• Test CoreML Backend / test-coreml / test-backend-macos (coreml, models) / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• Test CoreML Backend / test-coreml / test-backend-macos (coreml, operators) / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[MartinPavella]

@novak-vaclav I am not able to add you as a reviewer, but feel free to have a look.

[novak-vaclav]

LGTM. Good work 👍

(for some reason I don't see the "Resolve comment" in the Github GUI and resolving the comments in the diff view throws "Failed to resolve thread" 🤷)

[MartinPavella]

@robert-kalmar @StrycekSimon @roman-janik-nxp could you please have a look? @novak-vaclav approved the PR already but we need an approve from someone with write access to merge.

[StrycekSimon]

@robert-kalmar @StrycekSimon @roman-janik-nxp could you please have a look? @novak-vaclav approved the PR already but we need an approve from someone with write access to merge.

Sorry, I don't have the write access.