[lld] [RISCV] Disable gp relaxation if part of object unreachable (PR #72655)

[Nemanja Ivanovic via llvm-commits]

nemanjai wrote:

> cc @nemanjai

It seems like the patch is stalled in the review. Unfortunately, I am working on something unrelated and won't get back to RISC-V development until some time mid-2025. If you're interested in landing this, please feel free to take it over, update it and get it reviewed and landed since I won't be able to focus on it for quite some time.

https://github.com/llvm/llvm-project/pull/72655