add per-channel tests for linear

[mcr229]

Summary: Adding a test for qc8 linear

Reviewed By: digantdesai

Differential Revision: D55941565

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/3551

• :page_facing_up: Preview Python docs built from this PR

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

:white_check_mark: No Failures

As of commit 528594b82520da9d35f00766fef73b5b39446c56 with merge base fff20a738c5bb5c1cb259468b0a8aa6c6be8cd38 (): :green_heart: Looks good so far! There are no failures yet. :green_heart:

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

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D55941565

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D55941565

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D55941565

[facebook-github-bot]

This pull request has been merged in pytorch/executorch@8a63430b121a32d0a2027718e319164266b6e21d.