[llvm] [AMDGPU] Introduce "amdgpu-sw-lower-lds" pass to lower LDS accesses. (PR #87265)

[via llvm-commits]

skc7 wrote:

@arsenm @JonChesterfield We will consider all the feedback here and make the appropriate changes to this pass in the next iteration. 
Can we merge this version of the pass (and #89206) since its currently working solution to detect addressing errors for LDS?

https://github.com/llvm/llvm-project/pull/87265