ENH: Updated Make/files for utility function objects

src/postProcessing/functionObjects/utilities/Make/files

@@ -12,6 +12,9 @@ Peclet/PecletFunctionObject.C
 Q/Q.C
 Q/QFunctionObject.C
 
+blendingFactor/blendingFactor.C
+blendingFactor/blendingFactorFunctionObject.C
+
 DESModelRegions/DESModelRegions.C
 DESModelRegions/DESModelRegionsFunctionObject.C