[lld] [LLD][ELF] add bp-* options in ELF (PR #120514)

[via llvm-commits]

Colibrow wrote:

@Andarwinux The IRPGO profile here is generated according to the [RFC](https://discourse.llvm.org/t/rfc-temporal-profiling-extension-for-irpgo/68068) and is designed for coherence with the Mach-O implementation. As of now, I believe it is unrelated to the lto-cs-profile-path and not well-suited for reuse. What do you think? cc @ellishg 

https://github.com/llvm/llvm-project/pull/120514