GitHub #292 Move BackendRegistry.hpp to the public API

 * Moved to BackendRegistry.hpp include/armnn
 * Updated makefiles and sources accordingly

Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
Change-Id: I4d83abb581d523218a880c879fcf30c9611f7fd7
diff --git a/src/backends/backendsCommon/test/DynamicBackendTests.hpp b/src/backends/backendsCommon/test/DynamicBackendTests.hpp
index 4a7ab19..2615bdc 100644
--- a/src/backends/backendsCommon/test/DynamicBackendTests.hpp
+++ b/src/backends/backendsCommon/test/DynamicBackendTests.hpp
@@ -7,10 +7,10 @@
 
 #include <backendsCommon/DynamicBackend.hpp>
 #include <backendsCommon/DynamicBackendUtils.hpp>
-#include <backendsCommon/BackendRegistry.hpp>
 #include <backendsCommon/CpuTensorHandle.hpp>
 
 #include <armnn/ILayerSupport.hpp>
+#include <armnn/BackendRegistry.hpp>
 
 #include <reference/workloads/RefConvolution2dWorkload.hpp>