torch.cat: disallow inputs on different devices (#35053)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/35045
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35053
Differential Revision: D20545517
Pulled By: ngimel
fbshipit-source-id: eee3fc87c7e578ff44d69d5ce6f92a8f496fa97b
