[llvm] [AMDGPU][MC] fix unused template warning during build (PR #116313)

[Brox Chen via llvm-commits]

broxigarchen wrote:

> I committed [58f107f](https://github.com/llvm/llvm-project/commit/58f107f38838275f0727521558cc06646d8c205d) to fix this warning.

Hi Jay. Thanks for the patch!

If I understand correctly these two patches are equivelent right?

https://github.com/llvm/llvm-project/pull/116313