COMPMID-417 - Added NEFlattenLayer function

Change-Id: I919c3352bf22bb41df2928be291be754c0518d3f
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/89536
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/arm_compute/runtime/NEON/NEFunctions.h b/arm_compute/runtime/NEON/NEFunctions.h
index 2aa52bf..40bff97 100644
--- a/arm_compute/runtime/NEON/NEFunctions.h
+++ b/arm_compute/runtime/NEON/NEFunctions.h
@@ -52,6 +52,7 @@
 #include "arm_compute/runtime/NEON/functions/NEErode.h"
 #include "arm_compute/runtime/NEON/functions/NEFastCorners.h"
 #include "arm_compute/runtime/NEON/functions/NEFillBorder.h"
+#include "arm_compute/runtime/NEON/functions/NEFlattenLayer.h"
 #include "arm_compute/runtime/NEON/functions/NEFloor.h"
 #include "arm_compute/runtime/NEON/functions/NEFullyConnectedLayer.h"
 #include "arm_compute/runtime/NEON/functions/NEGEMM.h"