[MLIR][XeGPU] Allow create mem desc from 2d memref#167767

Jianhui-Li merged 7 commits intomainllvm/llvm-project:mainfrom

users/Jianhui-Li/XeGPU/create-mem-desc-from-2d-memrefllvm/llvm-project:users/Jianhui-Li/XeGPU/create-mem-desc-from-2d-memrefCopy head branch name to clipboard