[quant][pyper] make embedding_bag quantization static (#44008)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44008
embedding_bag requires only quantization of weights (no dynamic quantization of inputs)
So the type of quantization is essentially static (without calibration)
This will enable pyper to do fc and embedding_bag quantization using the same API call
Test Plan:
python test/test_quantization.py test_embedding_bag
Imported from OSS
Reviewed By: vkuzo
Differential Revision: D23467019
fbshipit-source-id: 41a61a17ee34bcb737ba5b4e19fb7a576d4aeaf9
