[llvm] [BOLT][AArch64] Don't change layout in PatchEntries (PR #71278)

[Amir Ayupov via llvm-commits]

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

Testing has returned green. I'm still a bit concerned about the interaction b/w PatchEntries and LongJmp, but I guess we can live with that unless we hit edge cases. AArch64 test with `patch-entries` would be helpful.
LGTM with one nit.

https://github.com/llvm/llvm-project/pull/71278