Add NNC support for aten::hardtanh (a hot operation in mobilenet v2/v3) (#52394)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/52394
Test Plan:
Imported from OSS
test/test_tensorexpr.py
test/test_jit_fuser_te.py
Reviewed By: bertmaher
Differential Revision: D26497856
Pulled By: huiguoo
fbshipit-source-id: 8558f89826cad250da6f970bfc49384f2b9d7ee0
