Add phi_1_5 hugging face model (#1982)
Summary:
Add phi_1_5 hugging face model https://huggingface.co/microsoft/phi-1_5
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1982
Reviewed By: davidberard98
Differential Revision: D50345286
Pulled By: xuzhao9
fbshipit-source-id: 571b2cb497ab4463aaa54fbc93dfdf88d2458168
