[FX] Normalize torch. namespace ops (#53832)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/53832
Test Plan: Imported from OSS
Reviewed By: jfix71, Chillee
Differential Revision: D26982801
Pulled By: jamesr66a
fbshipit-source-id: 96ac8efe2b3c644cfb7328168f6db089d3756aa2
