[quant] Fix for the conv1d kernel shape (#36397)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/36397
Differential Revision: D20966295
Test Plan: Imported from OSS
Pulled By: z-a-f
fbshipit-source-id: bd2ab9dcfe22b900cff1ddffa60618fa8f703a1f
