NXP backend: Add option to run test reference quantized in Python

[MartinPavella]

Summary

NXP tests run models delegated to Neutron using the NSYS simulator. To determine correct output, a reference model is run on the CPU. Before, there were 2 choices for the reference, either non-delegated .pte file running in c++, or the original non-quantized float32 PyTorch model running in Python. This PR adds a 3rd option (to run in quantized edge dialect in Python), as well as easy extension to 2 more options in the future.

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/17619

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❌ 5 New Failures, 1 Unrelated Failure

As of commit 7103948 with merge base ef6ceae ():

NEW FAILURES - The following jobs have failed:

• pull / test-mediatek-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 78739edfae1bd4fd54440a9f03bccba244b0d6e416b6d9b856e2ce79780ed2ae /exec failed with exit code 2
• pull / test-openvino-linux / linux-job (gh)
  RuntimeError: Command docker exec -t c68f445ecc60d6837b88036d184802ce197cc9d9351eee4e09b2b938829a175b /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t c9c6413086e799a86466d91a1945fe87a766ed295814f6ece65280900809b8dc /exec failed with exit code 1
• pull / test-samsung-quantmodels-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 30b9dc05beda4aea3d4573c7a01caae2acdcc718aa5fbe5d4f23bfd1eea6f346 /exec failed with exit code 1
• pull / unittest-buck / linux / linux-job (gh)
  RuntimeError: Command docker exec -t b967576c831a19b3f4f784c3d835437777c3eb448c4f4539df5c151f202c1991 /exec failed with exit code 3

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

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

• pull / unittest-buck / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 3

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[MartinPavella]

@StrycekSimon feel free to review and use this functionality in your PR.

[MartinPavella]

Corresponding ExecuTorch Integration PR: https://bitbucket.sw.nxp.com/projects/AITEC/repos/executorch-integration/pull-requests/127/overview

Internal CI: https://bamboo3.sw.nxp.com/browse/MLTECE-EXIGH93-2

[StrycekSimon]

Nice, looks good to me. 👍

[MartinPavella]

@roman-janik-nxp I have no idea what happened, but when I re-based onto main, this PR got some sort of a failure, it closed automatically, and I cannot re-open it nor does it show the 3 commits ahead of main. So I have created a new PR with exactly the same commits you have just approved (#17733). I would appreciate an approval there so I can merge it.