[lld] [LLD][ARM] Allow R_ARM_SBREL32 relocations in debug info (PR #116956)

[Peter Smith via llvm-commits]

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

LGTM, I can confirm that this is how debug is supposed to be represented when RWPI is used. Please give MaskRay some time to comment.

I've left some small comments on lld conventions for test format.

https://github.com/llvm/llvm-project/pull/116956