COMPMID-3712 Remove OpenCL padding: CLDepthwiseConvolutionLayer3x3NHWCKernel FP16/32

Removed unused N from partial block loading macro
Created utility to assert change in padding

Signed-off-by: Giorgio Arena <giorgio.arena@arm.com>
Change-Id: Ifdd30c66dbf5f2842c6b2d939000613d5011708e
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4192
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/tests/datasets/DepthwiseConvolutionLayerDataset.h b/tests/datasets/DepthwiseConvolutionLayerDataset.h
index 5d516b5..ed596d6 100644
--- a/tests/datasets/DepthwiseConvolutionLayerDataset.h
+++ b/tests/datasets/DepthwiseConvolutionLayerDataset.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Arm Limited.
+ * Copyright (c) 2017-2020 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -162,7 +162,7 @@
     SmallDepthwiseConvolutionLayerDataset3x3()
     {
         add_config(TensorShape(3U, 3U, 2U), Size2D(3U, 3U), PadStrideInfo(1, 1, 0, 0));
-        add_config(TensorShape(7U, 7U, 3U, 2U), Size2D(3U, 3U), PadStrideInfo(1, 1, 0, 0));
+        add_config(TensorShape(7U, 8U, 3U, 2U), Size2D(3U, 3U), PadStrideInfo(1, 1, 0, 0));
         add_config(TensorShape(21U, 31U, 9U, 4U), Size2D(3U, 3U), PadStrideInfo(1, 1, 1, 0));
         // Asymmetric padding
         add_config(TensorShape(33U, 27U, 11U), Size2D(3U, 3U), PadStrideInfo(2, 2, 0, 1, 0, 1, DimensionRoundingType::FLOOR));