Move normal distribution to Aten(CPU) (#32031)
Summary:
Fix https://github.com/pytorch/pytorch/issues/24746
Pull Request resolved: https://github.com/pytorch/pytorch/pull/32031
Differential Revision: D19729002
Pulled By: ezyang
fbshipit-source-id: f571368a8a2ac4068c937062167a2fd89e64098c
