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

[via llvm-commits]

Andarwinux wrote:

If passing -flto -fprofile-use to clang, it also passes -plugin-opt=cs-profile-path to the linker.
Therefore, it might be useful to standardize to irpgo-profile or reuse cs-profile-path to avoid duplicate options and simplify the use of this feature. (i.e. end-users only need to use -fprofile-use and -Wl,-bp-*)

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