IVGCVSW-4482 Introduce IgnoreUnused implementation

Change-Id: Iad534e0e15ce561be6d0ffa23be19496be361385
Signed-off-by: Derek Lamberti <derek.lamberti@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5da8133..b85030a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -247,6 +247,7 @@
     include/armnn/Version.hpp
     include/armnn/profiling/IProfilingGuidGenerator.hpp
     include/armnn/profiling/ISendTimelinePacket.hpp
+    include/armnn/utility/IgnoreUnused.hpp
     profiling/common/include/SocketConnectionException.hpp
     src/armnn/layers/LayerCloneBase.hpp
     src/armnn/layers/LayerWithParameters.hpp