Set USE_RCCL cmake option (dependent on USE_NCCL) (#31341)
Summary:
so that Gloo build has RCCL path enabled for ROCm
Pull Request resolved: https://github.com/pytorch/pytorch/pull/31341
Differential Revision: D20379910
Pulled By: ezyang
fbshipit-source-id: 981f924be93ddcc0705c1934f92d938c29aaf312
