Add FP16 support to DebugWorkload

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Ia879f2d84a1b977474ee0dafa976f2aab32bd3ae
diff --git a/src/backends/reference/RefLayerSupport.cpp b/src/backends/reference/RefLayerSupport.cpp
index ef0cc8c..5a84d8a 100644
--- a/src/backends/reference/RefLayerSupport.cpp
+++ b/src/backends/reference/RefLayerSupport.cpp
@@ -495,8 +495,9 @@
 {
     bool supported = true;
 
-    std::array<DataType,3> supportedTypes =
+    std::array<DataType, 4> supportedTypes =
     {
+        DataType::Float16,
         DataType::Float32,
         DataType::QuantisedAsymm8,
         DataType::QuantisedSymm16