Add DALL-E 2 model to pytorch/benchmark (#1151)
Summary:
Resolving issue https://github.com/pytorch/benchmark/issues/897
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1151
Reviewed By: xuzhao9
Differential Revision: D39354794
Pulled By: nmacchioni
fbshipit-source-id: cb0068426cc55ba5120951b65855229d745d9bc0
