[lld] r250122 - [ELF2/PPC64] Resolve local-call relocations using the correct function-descriptor values

[Rafael Espíndola via llvm-commits]

> This this, I can link, and run, a dynamically-compiled "hello world"
> application on big-Endian PPC64/Linux (ELF v1 ABI) using lld.

Congratulations, that is a pretty big milestone, specially in
complicated ABIs like PPC64.

Cheers,
Rafael