Arm backend: Add docstrings for operator_support/embedding_support.py

[Sebastian-Larsson]

cc @freddan80 @per @zingo @oscarandersson8218 @digantdesai

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15373

• 📄 Preview Python docs built from this PR

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

❌ 10 New Failures, 2 Cancelled Jobs, 3 Unrelated Failures

As of commit 628444a with merge base de56c81 ():

NEW FAILURES - The following jobs have failed:

• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 824cccee767c93f9fc2016ed062aa940a09c85973294d82e09d8d870ec5cb7f0 /exec failed with exit code 1
• pull / unittest / linux / linux-job (gh)
  Process completed with exit code 137.
• pull / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t dcd3eb1161603137a10c40765a82527b133b2e0acd7031879964a561f32c29fe /exec failed with exit code 1
• Test CUDA Builds / export-gemma3-cuda-non-quantized / linux-job (gh)
  RuntimeError: Command docker exec -t b32ebb1fe1db082b2c2ff4db34297a7f68b5a9d9eff869e1b19f00a7888db1a8 /exec failed with exit code 2
• Test CUDA Builds / export-gemma3-cuda-quantized-int4-tile-packed / linux-job (gh)
  RuntimeError: Command docker exec -t b80c3c6bc7d7b65667413f77561f3d10d3fea716154649da74082e48041443fa /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-non-quantized / linux-job (gh)
  RuntimeError: Command docker exec -t ed7b56c2e88c1624a16a03fb71a18c83c6964deb8b382120a8425915e262f950 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-tile-packed / linux-job (gh)
  RuntimeError: Command docker exec -t d993cf217d2797c14e628208632da1b172d7872bc4cce837eea5db71ed8d3df1 /exec failed with exit code 2
• Test CUDA Builds / export-voxtral-cuda-quantized-int4-weight-only / linux-job (gh)
  RuntimeError: Command docker exec -t c9a1d262d80dadea8bed05f5758ccf859da4cb3f8a5570ab6d81f52527e62655 /exec failed with exit code 2
• Test Metal Backend / export-voxtral-metal-artifact / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 2
• trunk / test-llama-runner-mac (fp32, coreml) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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

• pull / unittest-buck / macos / macos-job (gh)
  ##[error]The operation was canceled.
• trunk / test-models-macos-coreml (mv2) / macos-job (gh)
  ##[error]The operation was canceled.

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 / macos / macos-job (gh) (trunk failure)
  export/tests/test_target_recipes.py::TestTargetRecipes::test_mv3_model
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)
• trunk / unittest-release / linux / linux-job (gh) (trunk failure)

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