IVGCVSW-6453 'Move the ArmNN Test Utils code to a physically separate directory'

* Created include/armnnTestUtils directory
* Moved Arm NN test utils files into armnnTestUtils directory

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I03ac54c645c41c52650c4c03b6a58fb1481fef5d
diff --git a/src/backends/backendsCommon/test/layerTests/DepthToSpaceTestImpl.hpp b/src/backends/backendsCommon/test/layerTests/DepthToSpaceTestImpl.hpp
index 18797c6..c6781a9 100644
--- a/src/backends/backendsCommon/test/layerTests/DepthToSpaceTestImpl.hpp
+++ b/src/backends/backendsCommon/test/layerTests/DepthToSpaceTestImpl.hpp
@@ -4,7 +4,7 @@
 //
 #pragma once
 
-#include "LayerTestResult.hpp"
+#include <armnnTestUtils/LayerTestResult.hpp>
 
 #include <ResolveType.hpp>