Add model kwargs (#1729)
Summary:
For torch.compile, I want to control the number of bounding boxes. So, just plumbing it through.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1729
Reviewed By: xuzhao9
Differential Revision: D46634234
Pulled By: anijain2305
fbshipit-source-id: 37519b91f6d118f3a411588ff59258f1e7657f22
