move logaddexp{2} to opinfo (#55535)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/55535
Test Plan: Imported from OSS
Reviewed By: mruberry
Differential Revision: D27649410
Pulled By: albanD
fbshipit-source-id: 4453da3853e2ac8e2e625ae9bdb9f717336bb3ec
