Back out "Back out "[c2] register cuda op for LpNorm (fallback)"" (#38566)
Summary:
Previously we got a CI issue in original submission (D21562485), so we backout the original diff (D21588831). Resubmitting here to reprod the CI issue and ask caffe2 dev to take a look.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/38566
Original commit changeset: 6dda4b71904d
Test Plan: buck test
Reviewed By: houseroad
Differential Revision: D21589352
fbshipit-source-id: de40ff2884019e14476e31c4c952f24d6e438f5f
