COMPMID-427: Port NEActivationLayer in 16bit fixed point.

Change-Id: Iebd61807f7b597c6bd990673bc7655c68ee16f4b
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/79085
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
diff --git a/tests/validation/Helpers.h b/tests/validation/Helpers.h
index d92699d..a551da7 100644
--- a/tests/validation/Helpers.h
+++ b/tests/validation/Helpers.h
@@ -90,7 +90,7 @@
             break;
         case ActivationLayerInfo::ActivationFunction::SQRT:
             // Reduce range as sqrt should take a non-negative number
-            bounds.first = (is_float) ? 0 : 1 << (fixed_point_position);
+            bounds.first = (is_float) ? 0 : 1;
             break;
         default:
             break;