[quant][fx][graphmode] Make FixedQParam ops work for dtypes other than quint8 (#65484)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/65484
This PR makes sure we only use FixedQParamFakeQuantize for quint8 dtype and allows user
to use other dtypes for ops like sigmoid, this is useful for producing reference pattern for
these ops that can be used in other backends like TensorRT
Test Plan:
python test/test_quantization.py TestQuantizeFxOps
Imported from OSS
Reviewed By: vkuzo
Differential Revision: D31120377
fbshipit-source-id: 3b529d588e2b6ff0377a89c181f6237f8f0cc2f5
