[llvm] [SystemZ][z/OS] yaml2obj GOFF symbols (PR #75971)

[James Henderson via llvm-commits]

https://github.com/jh7370 commented:

Sorry, I've been quite busy. I've done a quick skim of the latest update so that you can address these points. It's likely I'll have more at a later date. I'd prefer it if you push all your changes at once, rather than drip-feed them as you do them, as it makes it clearer that you've addressed everything.

https://github.com/llvm/llvm-project/pull/75971