Revoking mutually exclusive requirement on channels last and contiguous tensor (#28466)
Summary:
The old implementation assumed `is_channels_last_contiguous_` to be mutually
exclusive to `is_contiguous_`, which is not true.
Properly set the flag by checking strides.
Original Pull Request resolved: https://github.com/pytorch/pytorch/pull/24113
Original GitHub Author: jjsjann123 <jiej@nvidia.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/28466
Differential Revision: D16860715
Pulled By: VitalyFedyunin
fbshipit-source-id: facd19d3501b6566d77c46199567e0cd051a6b49
