[llvm] [BOLT] Handle internal calls in ValidateInternalCalls (PR #105736)

[Maksim Panchenko via llvm-commits]

maksfb wrote:

> However this change is at odds with #90804 that should speed up ValidateInternalCalls. We have the information we need in disassembleFunction so running the analysis again is wasteful.

Is it? It makes sense to add a mark and validate marked functions later. Both changes should superpose well.

https://github.com/llvm/llvm-project/pull/105736