Add torch.cuda.can_device_access_peer (#50446)
Summary:
And unrelying torch._C._cuda_canDeviceAccessPeer, which is a wrapper around cudaDeviceCanAccessPeer
Pull Request resolved: https://github.com/pytorch/pytorch/pull/50446
Reviewed By: mrshenli
Differential Revision: D25890405
Pulled By: malfet
fbshipit-source-id: ef09405f115bbe73ba301d608d56cd8f8453201b
