IVGCVSW-3235 Add scalar to use as padding value in Reference Pad

Signed-off-by: David Monahan <david.monahan@arm.com>
Change-Id: If050f318fcb7626bbfae1b8737a1d232a4a5a915
diff --git a/src/backends/reference/workloads/RefPadWorkload.cpp b/src/backends/reference/workloads/RefPadWorkload.cpp
index 16032e7..8cb9d88 100644
--- a/src/backends/reference/workloads/RefPadWorkload.cpp
+++ b/src/backends/reference/workloads/RefPadWorkload.cpp
@@ -30,8 +30,7 @@
     const T* inputData = GetInputTensorData<T>(0, m_Data);
     T* outputData = GetOutputTensorData<T>(0, m_Data);
 
-
-    Pad(inputInfo, outputInfo, m_Data.m_Parameters.m_PadList, inputData, outputData);
+    Pad(inputInfo, outputInfo, m_Data.m_Parameters.m_PadList, inputData, outputData, m_Data.m_Parameters.m_padValue);
 }
 
 template class RefPadWorkload<DataType::Float32>;