[JIT] Bind log1p and lgamma (#45791)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45791
Most of the lowering for log1p and lgamma already existed, add JIT integration.
Test Plan: Imported from OSS
Reviewed By: bertmaher
Differential Revision: D24169536
Pulled By: eellison
fbshipit-source-id: a009c77a3471f3b5d378bad5de6d8e0880e9da3c
