[clang] [compiler-rt] [llvm] [PGO][Offload] Allow PGO flags to be used on GPU targets (PR #94268)

[Joseph Huber via llvm-commits]

jhuber6 wrote:

> The crash is blocking our compiler updates. If nothing depends on this change yet, it would be great to revert the patch and re-land it once it's fixed.

Go ahead and revert it, but I think there were some follow-up patches. Also the `pgo1.c` and `pgo2.c` tests were flaky so I'm it's definitely the right move.

https://github.com/llvm/llvm-project/pull/94268