COMPMID-731 - Remove padding requirements for NEGEMMLowpOutputStage

Used a left-over for loop in:
- NEGEMMLowpQuantizeDownInt32ToUint8ScaleByFixedPointKernel
- NEGEMMLowpQuantizeDownInt32ToUint8ScaleKernel
in order to remove the padding requirements for AndroidNN

Change-Id: I8ef529fc3d1adecf15fbe42002d99bc0030f131f
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/112266
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: BSG Visual Compute Jenkins server to access repositories on http://mpd-gerrit.cambridge.arm.com <bsgcomp@arm.com>
diff --git a/tests/datasets/ShapeDatasets.h b/tests/datasets/ShapeDatasets.h
index 02a71aa..c9e5510 100644
--- a/tests/datasets/ShapeDatasets.h
+++ b/tests/datasets/ShapeDatasets.h
@@ -162,11 +162,11 @@
         : ShapeDataset("Shape",
     {
         // Batch size 1
-        TensorShape{ 1920U, 1080U },
-                     TensorShape{ 640U, 480U, 2U, 3U },
-                     TensorShape{ 4160U, 3120U },
+        TensorShape{ 1921U, 1083U },
+                     TensorShape{ 641U, 485U, 2U, 3U },
+                     TensorShape{ 4159U, 3117U },
                      // Batch size 4
-                     TensorShape{ 800U, 600U, 1U, 4U },
+                     TensorShape{ 799U, 595U, 1U, 4U },
     })
     {
     }