Changes to support int8 weight and fp32 bias in QNNPACK (#26307)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/26307
Add support for FP32 bias. Re-quantize bias during time time based on input scale.
If the value of input scale changes in the packed struct we requantize the bias with the updated input scale.
Test Plan: python test/test_quantized.py TestQNNPackOps
Differential Revision: D17504253
Pulled By: supriyar
fbshipit-source-id: 49fe36a0bee91aaeb085db28eec4ded8c684dcf4
