[quant][fx] Add support for quantized matmul (#83885)
Summary:
att, probably missed the op during migration to the reference flow
Test Plan:
python test/test_quantization.py TestQuantizeFxOps.test_qmatmul
Reviewers:
Subscribers:
Tasks:
Tags:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/83885
Approved by: https://github.com/andrewor14
