LLVM 14 incompatibility - TargetRegistry.h has been moved

[StefanBruens]

OpenShadingLanguage/src/liboslexec/llvm_util.cpp

Line 48 in a056e18

 #include <llvm/Support/TargetRegistry.h> 

llvm/llvm-project@89b5706

Move TargetRegistry.(h|cpp) from Support to MC

[Larry Gritz]

Already addressed by #1492
But I'm trying to track down why one reference image changes with LLVM14.