[reland][quant][graphmode] Add quantized conv2d-relu fusion pattern (#33279) (#34744)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/34744
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Test Plan: python test/test_jit.py
Differential Revision: D20449667
Pulled By: jerryzh168
fbshipit-source-id: 01bbc26604fac421dcaacaf4fa1b57731f1f08b7
