[lld] [lld][ELF] Extend profile guided function ordering to ELF binaries (PR #117514)

[via llvm-commits]

Colibrow wrote:

@ellishg @MaskRay Hi, I've rebased this PR with commit [118594](https://github.com/llvm/llvm-project/pull/118594) and addressed the code review comments. Could you please take another look?

https://github.com/llvm/llvm-project/pull/117514