Back out "Revert D33994546: [Quant][fx][improvement] Added test for quint4x2 for fx graph mode quantization (reland PR 69846)"
Summary:
Original commit changeset: d9c5979efb03
Original Phabricator Diff: D33994546 (https://github.com/pytorch/pytorch/commit/a5dad85c4fa153b29f5abe3d2634ae7f2def24bf)
Test Plan: None, this is a revert of a revert
Reviewed By: bigfootjon
Differential Revision: D34007153
fbshipit-source-id: cde321e98dbbfa38fb3873d9b8461ac47129f481
(cherry picked from commit 2e04ef4df4c7f05f04838c8653639ff61bf6215e)
