[libclc] [libclc] Suppress AMDGCN code object version for library code (PR #174412)

[Matt Arsenault via cfe-commits]

https://github.com/arsenm approved this pull request.

Ideally we would be able to base this on the triple (failing total removal of the flag). It's not great to spread the clang internal flags around, but given this is an internal project anyway it's tolerable and we do it for other flags already 

https://github.com/llvm/llvm-project/pull/174412