[quant] Add support for quantize_per_channel in the reference flow with decomposed tensor (#89270)
Summary:
att, after this PR we can produce quantize_per_channel and dequantize_per_channel ops (typically used for quantizing weights)
in the reference flow using decomposed tensor
Test Plan:
python test/test_quantization.py -k test__convert_to_reference_decomposed_fx_per_channel_quant
Reviewers:
Subscribers:
Tasks:
Tags:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89270
Approved by: https://github.com/vkuzo
