[llvm] [BOLT] Support instrumentation hook via DT_FINI_ARRAY (PR #67348)

[Vladislav Khmelevsky via llvm-commits]

https://github.com/yota9 commented:

Thanks! These are my first impressions, I would probably return to re-reviewing this patch in a few days :)

https://github.com/llvm/llvm-project/pull/67348