[llvm] [BOLT][RISCV] Preserve distinct IPLT entries for IFUNC aliases and fix RISC-V call targets (PR #222901)

[via llvm-commits]

Thrrreeee wrote:

cc @jrtc27 ,
Sorry for the delay in getting this fix ready. I’ve looked into the issues you raised  and added comments explaining the changes. I’d be happy to discuss them further.

https://github.com/llvm/llvm-project/pull/222901