[clang] [llvm] [SPIR-V] Map SPIR-V friendly work-item function to built-in variables (PR #148567)

[Victor Lomuller via llvm-commits]

https://github.com/Naghasan commented:

> I've changed names in https://github.com/llvm/llvm-project/blob/main/clang/lib/Headers/__clang_spirv_builtins.h#L54 in commit https://github.com/llvm/llvm-project/commit/a55fd379cac2d5b007d722eefe92b85f9c0bcb12

Make sense, thanks for updating the header :)

https://github.com/llvm/llvm-project/pull/148567