IVGCVSW-949 Refactor - clean up includes of ClWorkloadUtils.hpp

Move ClWorkloadUtils.hpp into ClWorkloads and reduce the number of places that include it

Change-Id: Iac661be34c185d6208ca75509155b049c24293ca
diff --git a/src/armnn/backends/test/ArmComputeCl.cpp b/src/armnn/backends/test/ArmComputeCl.cpp
index d8a70f0..9a516b6 100644
--- a/src/armnn/backends/test/ArmComputeCl.cpp
+++ b/src/armnn/backends/test/ArmComputeCl.cpp
@@ -8,7 +8,7 @@
 
 #include "backends/CpuTensorHandle.hpp"
 #include "backends/ClWorkloadFactory.hpp"
-#include "backends/ClWorkloadUtils.hpp"
+#include "backends/ClWorkloads/ClWorkloadUtils.hpp"
 #include "backends/RefWorkloadFactory.hpp"
 #include "backends/ClLayerSupport.hpp"
 #include "ActivationFixture.hpp"