[llvm] [BOLT][BTI] Disassemble PLT entries when processing BTI binaries (PR #169663)

[Gergely Bálint via llvm-commits]

bgergely0 wrote:

Marking this non-draft, as this is now needed for the follow-up patch (#173245), which patches PLTs in place.

https://github.com/llvm/llvm-project/pull/169663