Changes to match Fused Op: Dequantize->Swish->Quantize (#42255)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42255
Changes to match Fused Op: Dequantize->Swish->Quantize
* Changes to scale handling
Results showing matching intermediate and final Swish_Int8 Op.
P137389801
Test Plan: test case test_deq_swish_quant_nnpi.py
Reviewed By: hyuen
Differential Revision: D22827499
fbshipit-source-id: b469470ca66f6405ccc89696694af372ce6ce89e
