COMPMID-1718: Extend DepthConvert to support Cast

Change-Id: I6ee2c0b670727fc808fa636c53ddfaec3a0036c9
diff --git a/arm_compute/runtime/CL/CLFunctions.h b/arm_compute/runtime/CL/CLFunctions.h
index 9d4aa5b..2a8294f 100644
--- a/arm_compute/runtime/CL/CLFunctions.h
+++ b/arm_compute/runtime/CL/CLFunctions.h
@@ -40,6 +40,7 @@
 #include "arm_compute/runtime/CL/functions/CLBoundingBoxTransform.h"
 #include "arm_compute/runtime/CL/functions/CLBox3x3.h"
 #include "arm_compute/runtime/CL/functions/CLCannyEdge.h"
+#include "arm_compute/runtime/CL/functions/CLCast.h"
 #include "arm_compute/runtime/CL/functions/CLChannelCombine.h"
 #include "arm_compute/runtime/CL/functions/CLChannelExtract.h"
 #include "arm_compute/runtime/CL/functions/CLChannelShuffleLayer.h"