COMPMID-2102: Fix CLWinogradConvolutionLayer for 7x7

Change-Id: I522544f9930ec989f89c9505b767f99541a68fab
Signed-off-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-on: https://review.mlplatform.org/c/945
Reviewed-by: Giuseppe Rossini <giuseppe.rossini@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp b/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp
index 57c66f8..52973ba 100644
--- a/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp
+++ b/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp
@@ -64,8 +64,8 @@
     }
     else if(kernel_max_dim == 7U)
     {
-        output_tile = Size2D(kernel_dims.width == 1 ? 1U : 7U,
-                             kernel_dims.height == 1 ? 1U : 7U);
+        output_tile = Size2D(kernel_dims.width == 1 ? 1U : 2U,
+                             kernel_dims.height == 1 ? 1U : 2U);
     }
 
     return output_tile;