[quant][graphmode] torch.clamp (#36887)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/36887
Test Plan: Imported from OSS
Differential Revision: D21110469
Pulled By: z-a-f
fbshipit-source-id: 6829f5c315b8950a89364132bca953d78cd4ff3d
