IVGCVSW-3226 Refactor the reference normalization workload

 * Refactored RefNormalizationFloat32Workload into RefNormalizationWorkload
 * Added ref support of Uint8 norm workloads
 * Added workload unit tests for Uint8

Change-Id: I063ce919c267e02a32e739848e49d75fd98a5eb6
Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
diff --git a/src/backends/reference/backend.mk b/src/backends/reference/backend.mk
index 6f95113..2822c30 100644
--- a/src/backends/reference/backend.mk
+++ b/src/backends/reference/backend.mk
@@ -47,7 +47,7 @@
         workloads/RefLstmWorkload.cpp \
         workloads/RefMeanFloat32Workload.cpp \
         workloads/RefMeanUint8Workload.cpp \
-        workloads/RefNormalizationFloat32Workload.cpp \
+        workloads/RefNormalizationWorkload.cpp \
         workloads/RefPadWorkload.cpp \
         workloads/RefPermuteWorkload.cpp \
         workloads/RefPooling2dWorkload.cpp \