[llvm] [AMDGPU] Apply alignment attr for make.buffer.rsrc (PR #166914)

[Shilei Tian via llvm-commits]

https://github.com/shiltian requested changes to this pull request.

I don't think we should put the handling of AMDGPU specific code into the generic code. We can potentially create a class inheriting the existing ones in `AMDGPUAttributor` dedicated for the handling of AMDGPU specific stuff.

https://github.com/llvm/llvm-project/pull/166914