Functionalization: Only include headers for required ops (#68690)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68690
RegisterFunctionalization.cpp is a shared file, so only including the
required operators means a single operator change only requires 1
shard to be rebuilt instead of all of them.
Test Plan: Imported from OSS
Reviewed By: jbschlosser
Differential Revision: D32596275
Pulled By: albanD
fbshipit-source-id: 8b56f48872156b96fbc0a16b542b8bab76b73fd4
