COMPMID-400 Add support for 16 bit fixed point arithmetic.

Change-Id: Iebfaef1b219d80d6362b7fd4b1357612b31e43cb
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/77749
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/tests/Utils.h b/tests/Utils.h
index a6181b3..25023d4 100644
--- a/tests/Utils.h
+++ b/tests/Utils.h
@@ -499,6 +499,7 @@
             *reinterpret_cast<uint16_t *>(ptr) = value;
             break;
         case DataType::S16:
+        case DataType::QS16:
             *reinterpret_cast<int16_t *>(ptr) = value;
             break;
         case DataType::U32: