[quant][graphmode][fx][fix] enable per channel quantization for functional ops (#43534)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/43534
Test Plan: Imported from OSS
Reviewed By: vkuzo
Differential Revision: D23310857
fbshipit-source-id: ff7a681ee55bcc51f564e9de78319249b989366c
