[llvm] [ExecutionEngine] reinstate necessary include for building with `-DLLVM_USE_INTEL_JITEVENTS` (PR #117949)

[via llvm-commits]

h-vetinari wrote:

Based on 
https://github.com/llvm/llvm-project/blob/03e7862962d01a5605f1eeeb26626083584945ff/llvm/Maintainers.md?plain=1#L353-L356
perhaps @lhames can chime in here (or simply merge)? Not sure whose maintainership this falls under, but I'm not successful in getting a response here.

https://github.com/llvm/llvm-project/pull/117949