[llvm] [AMDGPU] Support Wave Reduction for i16 types - 1 (PR #194808)

[via llvm-commits]

easyonaadit wrote:

### Merge activity

* **Jun 10, 9:35 AM UTC**: The merge label 'FP Bundles' was detected. This PR will be added to the [Graphite merge queue](https://app.graphite.com/merges?org=llvm&repo=llvm-project) once it meets the requirements.


https://github.com/llvm/llvm-project/pull/194808