[clang] [lld] [llvm] AMDGPU: Use ELF mangling in data layout (PR #163011)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

> We should just delete the hardcoded datalayouts out of device libs (really we should delete the IR there altogether, but the datalayout is unnecessary)

It will take quite some time for those changes to land and get propagated from ROCm and it's unacceptable for a trivial OpenMP / HIP program to emit 50+ lines of warnings for six months.

https://github.com/llvm/llvm-project/pull/163011