add channels last for MaxPool2d (#56361)
Summary:
add channels last support for MaxPool2d.
this one is a replacement of https://github.com/pytorch/pytorch/pull/48917
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56361
Reviewed By: heitorschueroff
Differential Revision: D27874142
Pulled By: VitalyFedyunin
fbshipit-source-id: bc9604def9c974d7b59621fc709a39948088b992
