[clang] [Clang] Automatically link the `compiler-rt` for GPUs if present (PR #109152)

[Shilei Tian via cfe-commits]

shiltian wrote:

I like this direction and I think it should be the right way. However, IMHO, I think it needs discussion (and potentially an RFC).

https://github.com/llvm/llvm-project/pull/109152