Add overload name to JIT prim operators, version 2 (#29960)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/29960
Overload name is required in mobile operators with the same name but different schema. Since it's not used in JIT, it's safe to add overload names for JIT operators.
Test Plan: Imported from OSS
Differential Revision: D18555484
fbshipit-source-id: b451379af24e255d8b0c61b964ae32fd1a64ed34
