Add SiLU backward Aten symbol (#67665)
Summary:
This is related to https://github.com/pytorch/xla/issues/3192. bdhirsh
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67665
Reviewed By: desertfire
Differential Revision: D32245736
Pulled By: bdhirsh
fbshipit-source-id: c5a2b24214fa37a181246cbbfcbee131473cf807
