[lld] [llvm] [lld-macho] Enable Linker Optimization Hints pass for arm64_32 (PR #148964)

[Nico Weber via llvm-commits]

https://github.com/nico approved this pull request.

Thanks!

I like putting no-op code moves and behavior changes into separate commits, so personally I'd land this as one commit that moves some code to a new file (without changing any behavior) and a second commit that changes behavior.

But up to you :)

https://github.com/llvm/llvm-project/pull/148964