Summary: Add MCU model verification to CI

[psiddh]

Test Plan: OSS CI

Reviewers:

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Summary

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Test plan

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[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/13572

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❌ 4 New Failures, 2 Unrelated Failures

As of commit 70a31e7 with merge base 90c16ef ():

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
• Build Presets / linux (linux, linux.2xlarge, executorch-ubuntu-22.04-clang12) / build (gh)
• pull / unittest / macos / macos-job (gh)
  extension/llm/modules/test/test_position_embeddings.py::TilePositionalEmbeddingTest::test_tile_positional_embedding_aoti
• trunk / test-mcu-models (cmake) / linux-job (gh)
  RuntimeError: Command docker exec -t 289ce778e05a1c3c549124e3160f972cd4e7e45a44f6878b10ef731eb930b751 /exec failed with exit code 2

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

• trunk / unittest-release / macos / macos-job (gh) (similar failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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

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

• pull / unittest-editable / macos / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[digantdesai]

Looks good. Kicked them off on the CI. Let's see how long the job takes else we can reduce the number of models running serially on the job or somehow run them in parallel.

[psiddh]

Looks good. Kicked them off on the CI. Let's see how long the job takes else we can reduce the number of models running serially on the job or somehow run them in parallel.

Looks like job passed : https://github.com/pytorch/executorch/actions/runs/17146863588/job/48644753234?pr=13572

════════════════════════════════════════════════════════════════
🏁 MCU MODEL VALIDATION SUMMARY - TARGET: ethos-u85-128
════════════════════════════════════════════════════════════════

lstm : ✅ Passed
mv2 : ✅ Passed
mv3 : ✅ Passed
resnet18 : ✅ Passed

[mergennachin]

Do you need "--use-pt-pinned-commit"?

[psiddh]

Do you need "--use-pt-pinned-commit"?

No I don't think this is needed, removed this in the latest iter