[lld] [LLD][ELF][AArch64] Discard .ARM.attributes sections (PR #125838)

[Hans Wennborg via llvm-commits]

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

My preference would be to revert the breaking change and find the proper solution (fix all the linkers, apply shf_exclude, put behind a flag..) without time pressure. Especially since it landed before the branch point.

But if you think this is better, please land it so at least lld users get fixed :)

https://github.com/llvm/llvm-project/pull/125838