qnnpack hardswish - pytorch op integration (#36320)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/36320
Hooks up the aten quantized hardswish op to the QNNPACK
path added in the previous PR.
Test Plan:
tests pass
will run benchmarking on mobile to confirm
Imported from OSS
Differential Revision: D20965043
fbshipit-source-id: e3f147268142103b5ea3f48610aa3b9837b7b61a
