[lld] [lld][ELF] Sort thunks by their destination to allow quicker convergence (PR #209962)

[Peter Smith via llvm-commits]

https://github.com/smithp35 approved this pull request.

Thanks for the updates. This looks good to me, although please leave some time for MaskRay to add any additional comments/objections.

https://github.com/llvm/llvm-project/pull/209962