[NNC] Enable unary op cpu testing (#47374)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47374
A few small fixes needed to enable unary op cpu testing. If reviewers would prefer I split them up let me know.
Test Plan: Imported from OSS
Reviewed By: ansley
Differential Revision: D24805248
Pulled By: eellison
fbshipit-source-id: c2cfe2e3319a633e64da3366e68f5bf21d390cb7
