GeForce clock query fix Issue #1440 (#1445)
Summary:
My apologies, not sure how to link this PR to [issue-1440](https://github.com/pytorch/benchmark/issues/1440). This mainly affects individuals who are using GeForce video cards for general benchmarking.
this will check the clocks list received from nvidia_smi_query function and change any clock from [N/A] to 0, allowing the integer return back to the calling function.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1445
Reviewed By: aaronenyeshi
Differential Revision: D43777990
Pulled By: xuzhao9
fbshipit-source-id: 51686be8184bdd4d628abaaa47a3636a0de94d6c
