rocm build (#15981)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/15981
caffe2/operators/unique_ops.cu translated to caffe2/operators/hip/unique_ops.hip breaks rocm build
Reviewed By: BIT-silence
Differential Revision: D13646129
fbshipit-source-id: 900a14e14216686ec4560b30df2eabbd7ec2ff91
