Automerge: [llvm] Add missing dependency of libLLVMCodeGen on vt_gen

```
llvm-project/llvm/include/llvm/CodeGenTypes/MachineValueType.h:43:10: fatal error: 'llvm/CodeGen/GenVT.inc' file not found
   43 | #include "llvm/CodeGen/GenVT.inc"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
```

rdar://141643651

Author: jroelofs

llvm/lib/CodeGen/CMakeLists.txt

@@ -263,6 +263,7 @@ add_llvm_component_library(LLVMCodeGen
 
   DEPENDS
   intrinsics_gen
+  vt_gen
   ${MLDeps}
 
   LINK_COMPONENTS