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

[via llvm-commits]

h-vetinari wrote:

Thanks for the review. Any thoughts on whether this should move behind the `#if LLVM_USE_INTEL_JITEVENTS`?

Also, as I don't have the commit rights, I cannot merge this myself - would appreciate if someone could push the button. :)

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