[rebase] missing OpenMPDialect.cpp include. TODO upstream.

Author: jeanPerier

mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.cpp

@@ -26,6 +26,7 @@
 
 #include "mlir/Dialect/OpenMP/OpenMPOpsDialect.cpp.inc"
 #include "mlir/Dialect/OpenMP/OpenMPOpsEnums.cpp.inc"
+#include "mlir/Dialect/OpenMP/OpenMPOpsInterfaces.cpp.inc"
 #include "mlir/Dialect/OpenMP/OpenMPTypeInterfaces.cpp.inc"
 
 using namespace mlir;