pytorch

a90bcd20 - [quant][fx] Support override observers and fake quantize module in backend_config_dict (#75135)

[quant][fx] Support override observers and fake quantize module in backend_config_dict (#75135) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/75135 Some operators have fixed quantization parameters, this PR adds the support to override the qconfig in the backend_config_dict Test Plan: python test/test_quantization.py TestQuantizeFx python test/test_quantization.py TestQuantizeFxOps Imported from OSS Reviewed By: vkuzo Differential Revision: D35334279 fbshipit-source-id: 390510bd8fc2d61004c36c54390989583e6519ce (cherry picked from commit ccf9bcd7eb4564ec97c5e0548b8ee926f640360b)