[llvm] [AMDGPU] Add product names to processor table (PR #163717)

[Jay Foad via llvm-commits]

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

LGTM. I guess we could add more product names for each target, e.g. 880M is also gfx1150, but adding one is better than none.

https://github.com/llvm/llvm-project/pull/163717