IVGCVSW-6635 Move MemCopyTestImpl from acl to armnnTestUtils.

* Move MemCopyTestImpl.hpp from src/backends/aclCommon/test/ to
  include/armnnTestutils.
* Refactor MemCopyTests in aclCommon, cl and Neon.
* Introduce RefMemCopyTests to exercise this utility in x86 builds.

Signed-off-by: Colm Donelan <colm.donelan@arm.com>
Change-Id: I8824f013d3656658ed0a2904bb79384e3af68641
diff --git a/src/backends/backendsCommon/test/EndToEndTestImpl.hpp b/src/backends/backendsCommon/test/EndToEndTestImpl.hpp
index 59acb23..c69a4a5 100644
--- a/src/backends/backendsCommon/test/EndToEndTestImpl.hpp
+++ b/src/backends/backendsCommon/test/EndToEndTestImpl.hpp
@@ -11,7 +11,7 @@
 #include <armnn/IRuntime.hpp>
 
 #include <Profiling.hpp>
-#include <QuantizeHelper.hpp>
+#include <armnnUtils/QuantizeHelper.hpp>
 #include <ResolveType.hpp>
 
 #include <doctest/doctest.h>