[vulkan] Conv2d with optional clamp (#39115)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39115
Conv2d with optional clamp, to handle fused conv2d_clamp from prepacking
Test Plan: Imported from OSS
Differential Revision: D21962427
Pulled By: IvanKobzarev
fbshipit-source-id: 8aec7ae22dff6ed3896011ebc218292b5503a69b
