Rework DepthwiseConvolution heuristic on OpenCL

Resolves COMPMID-5632

Change-Id: I2bdbe69a610ca2510fbd74d5d412842679299762
Signed-off-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8365
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/CL/CLHelpers.cpp b/src/core/CL/CLHelpers.cpp
index 94675d6..b318642 100644
--- a/src/core/CL/CLHelpers.cpp
+++ b/src/core/CL/CLHelpers.cpp
@@ -441,7 +441,7 @@
     ARM_COMPUTE_ERROR_ON(err != CL_SUCCESS);
 }
 
-bool export_weights_to_cl_image(const ITensorInfo *tensor)
+bool export_to_cl_image(const ITensorInfo *tensor)
 {
     if(tensor->tensor_shape()[0] % 4)
     {