IVGCVSW-3159 Support QSymm16 for Splitter workloads

Change-Id: I9af5d2d8ade97b9ecd2e6fbf13db9fa3bb622ed8
Signed-off-by: Ruomei Yan <ruomei.yan@arm.com>
diff --git a/src/backends/reference/backend.mk b/src/backends/reference/backend.mk
index 57204a0..46aac05 100644
--- a/src/backends/reference/backend.mk
+++ b/src/backends/reference/backend.mk
@@ -61,14 +61,14 @@
         workloads/RefSoftmaxWorkload.cpp \
         workloads/RefSpaceToBatchNdWorkload.cpp \
         workloads/RefStridedSliceWorkload.cpp \
-        workloads/RefSplitterFloat32Workload.cpp \
-        workloads/RefSplitterUint8Workload.cpp \
+        workloads/RefSplitterWorkload.cpp \
         workloads/ResizeBilinear.cpp \
         workloads/Rsqrt.cpp \
         workloads/SpaceToBatchNd.cpp \
         workloads/StridedSlice.cpp \
         workloads/StringMapping.cpp \
-        workloads/Softmax.cpp
+        workloads/Softmax.cpp \
+        workloads/Splitter.cpp
 
 # BACKEND_TEST_SOURCES contains the list of files to be included
 # in the Android unit test build (armnn-tests) and it is picked