IVGCVSW-3179 Extend floor workload to support QSymm16

 * Added support for QSymm16 in Floor workload
 * Added unit test for QSymm16 Floor

Signed-off-by: James Conroy <james.conroy@arm.com>
Change-Id: I6d36a07b3cfff212056125232f7842ca04bf4947
diff --git a/src/backends/backendsCommon/WorkloadData.cpp b/src/backends/backendsCommon/WorkloadData.cpp
index 9cc8ba0..6d17f3e 100644
--- a/src/backends/backendsCommon/WorkloadData.cpp
+++ b/src/backends/backendsCommon/WorkloadData.cpp
@@ -1031,7 +1031,8 @@
 
     std::vector<DataType> supportedTypes =
     {
-            DataType::Float32
+            DataType::Float32,
+            DataType::QuantisedSymm16
     };
 
     ValidateDataTypes(workloadInfo.m_InputTensorInfos[0],  supportedTypes, floorQueueDescString);