[lld] [lld] Add target support for SystemZ (s390x) (PR #75643)

[Nathan Chancellor via llvm-commits]

nathanchance wrote:

Alright, submitted: https://lore.kernel.org/20240208-fix-elf-type-btf-vmlinux-bin-o-big-endian-v1-1-cb3112491edc@kernel.org/

I’ve collected all the patches I have sent on top of 6.8-rc3 for easy testing in my kernel.org repo: https://git.kernel.org/nathan/l/s390-lld

With that, I will stop hijacking this pull request with unrelated issues, sorry for all the noise so far but this is really awesome to see!

https://github.com/llvm/llvm-project/pull/75643