[PyTorch Operator Benchmark] gelu benchmark (#59334)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/59334
Add gelu op benchmark
ghstack-source-id: 130947172
Test Plan: gelu_test
Reviewed By: hl475
Differential Revision: D28842959
fbshipit-source-id: 93e23e027a488412488ecf22335d7d915f6cc3b4
