[clang] [llvm] Reland HIP offload PGO compiler support and link the device-profile runtime (PR #201607)

[Yaxun Liu via cfe-commits]

yxsamliu wrote:

This is the compiler half of the offload PGO reland. It depends on the compiler-rt half in #201606 (which adds the clang_rt.profile_rocm library this links). #201606 should land first.

https://github.com/llvm/llvm-project/pull/201607