Register FC/Conv DNNLowp separately for supporting both tensor type (#24361)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/24361
Currently we only support Conv in kernel but have entrance for both type using one same class
It is time make change
Reviewed By: csummersea
Differential Revision: D16604713
fbshipit-source-id: b98d39a2c7960707cd50ba27e43dce73f741eeeb
