[llvm] [AMDGPU] Use absolute relocations when compiling for AMDPAL and Mesa3D (PR #67791)

[Nicolai Hähnle via llvm-commits]

https://github.com/nhaehnle approved this pull request.

Ok, understood. Thanks for explaining about the issue with integers vs. pointers.

https://github.com/llvm/llvm-project/pull/67791