[llvm] AMDGPU: Add baseline tests for VGPR MFMA rewriting pass (PR #145023)

[Matt Arsenault via llvm-commits]

arsenm wrote:

### Merge activity

* **Jun 27, 11:58 AM UTC**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/145023).


https://github.com/llvm/llvm-project/pull/145023