IVGCVSW-3888 Add INSTANCE_NORMALIZATION Reference implementation

Signed-off-by: Kevin May <kevin.may@arm.com>
Change-Id: I725022f86e990c482ea323fc90fd136fe493ed68
diff --git a/src/backends/reference/workloads/RefWorkloads.hpp b/src/backends/reference/workloads/RefWorkloads.hpp
index 94592cb..39dfa05 100644
--- a/src/backends/reference/workloads/RefWorkloads.hpp
+++ b/src/backends/reference/workloads/RefWorkloads.hpp
@@ -36,6 +36,7 @@
 #include "RefFloorWorkload.hpp"
 #include "RefFakeQuantizationFloat32Workload.hpp"
 #include "RefGatherWorkload.hpp"
+#include "RefInstanceNormalizationWorkload.hpp"
 #include "RefL2NormalizationWorkload.hpp"
 #include "RefLstmWorkload.hpp"
 #include "RefMeanWorkload.hpp"