[quant] Make OP_LIST_TO_FUSER_METHOD public (#43286)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/43286
We need to use this in graph mode quantization on fx
Test Plan: Imported from OSS
Reviewed By: vkuzo
Differential Revision: D23221734
fbshipit-source-id: 7c3c3840ce5bdc185b962e081aff1618f4c58e85
