[Clang][AMDGPU] Add builtins for some buffer resource atomics#149216

zGoldthorpe merged 11 commits intollvm:mainllvm/llvm-project:mainfrom

zGoldthorpe:pr/amdgcn.raw.buffer.atomicszGoldthorpe/llvm-project:pr/amdgcn.raw.buffer.atomicsCopy head branch name to clipboard