Add OpInfo for `nn.functional.gaussian_nll_loss` (#67376)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/67376
Test Plan: Imported from OSS
Reviewed By: mruberry
Differential Revision: D31974040
Pulled By: ejguan
fbshipit-source-id: d6abac78a378d2763ca2fd465e64dea9985840f2
