IVGCVSW-5787 Add/Update Execute() implementations in RefActivationWorkload

 * Added multithreaded StridedSliceEndToEndTest

Signed-off-by: Finn Williams <Finn.Williams@arm.com>
Change-Id: I4579db7b5959e0a22256f1bda00238c22e611dec
diff --git a/src/backends/reference/workloads/RefTransposeWorkload.cpp b/src/backends/reference/workloads/RefTransposeWorkload.cpp
index cc7a555..828badd 100644
--- a/src/backends/reference/workloads/RefTransposeWorkload.cpp
+++ b/src/backends/reference/workloads/RefTransposeWorkload.cpp
@@ -16,12 +16,25 @@
 template <armnn::DataType DataType>
 void RefTransposeWorkload<DataType>::Execute() const
 {
+    Execute(m_Data.m_Inputs, m_Data.m_Outputs);
+}
+
+template <armnn::DataType DataType>
+void RefTransposeWorkload<DataType>::ExecuteAsync(WorkingMemDescriptor &workingMemDescriptor)
+{
+    Execute(workingMemDescriptor.m_Inputs, workingMemDescriptor.m_Outputs);
+}
+
+template <armnn::DataType DataType>
+void RefTransposeWorkload<DataType>::Execute(std::vector<ITensorHandle*> inputs,
+                                             std::vector<ITensorHandle*> outputs) const
+{
     using T = ResolveType<DataType>;
 
     ARMNN_SCOPED_PROFILING_EVENT(Compute::CpuRef, GetName() + "_Execute");
 
-    const ITensorHandle*     src      = m_Data.m_Inputs[0];
-    ITensorHandle*           dst      = m_Data.m_Outputs[0];
+    const ITensorHandle*     src      = inputs[0];
+    ITensorHandle*           dst      = outputs[0];
     const PermutationVector& mappings = m_Data.m_Parameters.m_DimMappings;
 
     armnnUtils::Transpose(GetTensorInfo(src).GetShape(), mappings, src->Map(), dst->Map(), sizeof(T));