COMPMID-417: Port NEDirectConvolution 1x1 to QS16.

Change-Id: Icae6a5091e836d0aca24375f43cca9e6d3a2090f
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/81662
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/arm_compute/core/Types.h b/arm_compute/core/Types.h
index 765cae4..2d3b3d6 100644
--- a/arm_compute/core/Types.h
+++ b/arm_compute/core/Types.h
@@ -68,6 +68,7 @@
     QS16,
     U32,
     S32,
+    QS32,
     U64,
     S64,
     F16,