COMPMID-1498 - Enable grouping in CLGEMMConvolutionLayer

Change-Id: I15c7df21773145b03f42b6f78bd7ad2e5b8a5219
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/144126
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/tests/validation/reference/ConvolutionLayer.h b/tests/validation/reference/ConvolutionLayer.h
index ff3b153..ccce53a 100644
--- a/tests/validation/reference/ConvolutionLayer.h
+++ b/tests/validation/reference/ConvolutionLayer.h
@@ -37,7 +37,7 @@
 {
 template <typename T, typename TB>
 SimpleTensor<T> convolution_layer(const SimpleTensor<T> &src, const SimpleTensor<T> &weights, const SimpleTensor<TB> &bias, const TensorShape &output_shape, const PadStrideInfo &info,
-                                  const Size2D &dilation = Size2D(1U, 1U));
+                                  const Size2D &dilation = Size2D(1U, 1U), unsigned int num_groups = 1);
 } // namespace reference
 } // namespace validation
 } // namespace test