[llvm] AMDGPU: Fix verifier error on tail call target in vgprs (PR #110984)

[Matt Arsenault via llvm-commits]

arsenm wrote:

### Merge activity

* **Oct 3, 1:50 PM EDT**: @arsenm started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/110984).


https://github.com/llvm/llvm-project/pull/110984