Implement ChannelShuffle op with XNNPACK (#43602)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/43602
Test Plan: Imported from OSS
Reviewed By: kimishpatel
Differential Revision: D23334952
Pulled By: kimishpatel
fbshipit-source-id: 858ef3db599b1c521ba3a1855c9a3c35fe3b02b0
