[mlir] [clang-tools-extra] [clang] [llvm] [mlir][spirv] Support function argument decorations for ptr in the PhysicalStorageBuffer (PR #76353)

[Lei Zhang via cfe-commits]

antiagainst wrote:

Thanks a lot for the contribution and bearing with me for the nitpicking. :) To avoid burden you further, I rebased and revised some comment/error message slightly. :) I'll land once bots are happy.

https://github.com/llvm/llvm-project/pull/76353