Arm backend: Add TOSA (DW) Conv2d dialect operator

[oscarandersson8218]

Adds backend dialect operators for:

• Conv2D
• Depthwise Conv2D

Also removes AddBiasPass and moves that logic to new RewriteConv2dPass.

cc @freddan80 @per @zingo @digantdesai

[pytorch-bot]

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❌ 4 New Failures, 4 Unrelated Failures

As of commit 89af054 with merge base 4c064e3 ():

NEW FAILURES - The following jobs have failed:

• Lint / android-java-format / linux-job (gh)
  RuntimeError: Command docker exec -t fa847076aa95f3acf087643b5e5f2a3817555f1986ee0c75bcd54e883f4b31fd /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 7a0f7476d50b9aa1b731bf7705b3377d403b67c78b0546c59653871bafe07836 /exec failed with exit code 1
• Test CUDA Builds / export-voxtral-cuda-artifact / linux-job (gh)
  RuntimeError: Command docker exec -t a23d199300d696a06881b769e31ea57aecae467e6cc58df5e59f40173e2819b1 /exec failed with exit code 2
• trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (gh)
  RuntimeError: Command docker exec -t 501c0af0683802e0545285579896dbe2d76e01870e531c340049bb7af9619a13 /exec failed with exit code 1

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

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

• pull / unittest / windows / windows-job (gh) (trunk failure)
  runtime/test/test_runtime_etdump_gen.py::RuntimeETDumpGenTest::test_etdump_params_with_bytes_and_buffer
• pull / unittest-arm-backend-with-no-fvp (test_pytest_models) / linux-job (gh) (trunk failure)
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  runtime/test/test_runtime_etdump_gen.py::RuntimeETDumpGenTest::test_etdump_params_with_bytes_and_buffer
• trunk / unittest-release / windows / windows-job (gh) (trunk failure)
  runtime/test/test_runtime_etdump_gen.py::RuntimeETDumpGenTest::test_etdump_params_with_bytes_and_buffer

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[digantdesai]

Thanks for the rename :)

[digantdesai]

Thanks! I like this tosa op abstraction layer direction :)