IVGCVSW-3248 Refactor reference BatchToSpace workload

 * Add Decoders and Encoders to workload to make it data type agnostic
 * Merge float32 and Uint8 into single workload

Change-Id: I8adfa1898a63f13889eaaf55a31c26fd1e2d7ee8
Signed-off-by: Francis Murtagh <francis.murtagh@arm.com>
diff --git a/src/backends/reference/backend.mk b/src/backends/reference/backend.mk
index 6b7e895..849d87c 100644
--- a/src/backends/reference/backend.mk
+++ b/src/backends/reference/backend.mk
@@ -28,8 +28,7 @@
         workloads/PreluImpl.cpp \
         workloads/RefActivationWorkload.cpp \
         workloads/RefBatchNormalizationWorkload.cpp \
-        workloads/RefBatchToSpaceNdFloat32Workload.cpp \
-        workloads/RefBatchToSpaceNdUint8Workload.cpp \
+        workloads/RefBatchToSpaceNdWorkload.cpp \
         workloads/RefConcatWorkload.cpp \
         workloads/RefConstantWorkload.cpp \
         workloads/RefConvertFp16ToFp32Workload.cpp \