[clang] [HIP][Driver] Use alternative `/lib64` or `/lib` depending on `amdhsa64` library location (PR #211587)

[Juan Manuel Martinez Caamaño via cfe-commits]

jmmartinez wrote:

In the last changes we check for `lib/libamdhip64.so` `lib64/libamdhip64.so` (or `lib/amdhip64.lib` `lib64/amdhip64.lib` on windows) and default to `lib/` if none exists.

https://github.com/llvm/llvm-project/pull/211587