[llvm] [AMDGPU] Extend wide VGPR copy expansion to 96-bit copies (PR #214561)

[via llvm-commits]

robertvirany wrote:

@jayfoad Would you mind taking a look at this when you have a chance? The CI is yellow because the required GitHub Actions statuses were never reported - the checks that ran passed.

https://github.com/llvm/llvm-project/pull/214561