Add QInt32 ScalarType and qint32 data type (#19816)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19816
We need this for quantization for bias
add third argument of ScalarType to `quantize_linear`
Differential Revision: D15094174
fbshipit-source-id: f19ec8f4716cf5fe0aa21b38d45af6d27c9ab377
