Arm backend: Updating tests for 16A8W ops which are supported

[Ninja91]

Summary: Updating the TOSA, U55 & U85 tests to remove xfails. These ops are supported now and updating tests to not expect failure.

Differential Revision: D84262200

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

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❌ 5 New Failures, 2 Cancelled Jobs, 4 Unrelated Failures

As of commit dc77814 with merge base 4bdd3df ():

NEW FAILURES - The following jobs have failed:

• pull / test-qnn-wheel-packages-linux (3.10) / linux-job (gh)
  RuntimeError: Command docker exec -t 0aa935d448602cac26941a8e35a3ee90ceea037a4aa4decb110c77431d7adb38 /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.11) / linux-job (gh)
  RuntimeError: Command docker exec -t 423dd21a224dec6c91464a92e9350297de15927a487e1182d2cdaa33a14d5dbb /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.12) / linux-job (gh)
  RuntimeError: Command docker exec -t ef97f4460a422a23e73818d5c2631629f66d01e7bd174fcaa74d82980172edd8 /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 5d69bf7b2ba7b2b679480b089d9d3622f24f9149af65bc2b65c8f93526520382 /exec failed with exit code 1
• Test CUDA Builds / test-voxtral-cuda-e2e / linux-job (gh)
  RuntimeError: Command docker exec -t 33757ec99b56aa1f787f1409280c9648789ec899ee15da822e974c96c0bf596f /exec failed with exit code 2

CANCELLED JOBS - The following jobs were cancelled. Please retry:

• trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (gh)
  RuntimeError: Command docker exec -t e0614da916e0c6b3c9cbf9d7e2d7e90f1caea9885ad6c18016772533fab5e291 /exec failed with exit code 1
• trunk / test-models-macos-coreml (mv3) / macos-job (gh)
  ##[error]The operation was canceled.

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

• pull / unittest-arm-backend-with-no-fvp (test_pytest_models) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

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 / windows / windows-job (gh) (trunk failure)
  Process completed with exit code 1.
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  Process completed with exit code 1.
• trunk / unittest-release / windows / windows-job (gh) (trunk failure)
  Process completed with exit code 1.

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[meta-codesync]

@Ninja91 has exported this pull request. If you are a Meta employee, you can view the originating Diff in D84262200.

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[digantdesai]

Nice!

[zingo]

@Ninja91 this seem to have broke arm testing :(
I spot this error in the logs
2025-10-10T09:57:35.5641273Z FAILED backends/arm/test/ops/test_slice.py::test_slice_tensor_16a8w_u85_INT16[ones_slice_4] - RuntimeError: Corstone simulation failed: