IVGCVSW-3723 Adding reference workload support for ArgMinMax

Change-Id: I65209ecec4e3abf808163239748d6e830568c2e3
Signed-off-by: Nikhil Raj <nikhil.raj@arm.com>
diff --git a/src/backends/reference/RefWorkloadFactory.hpp b/src/backends/reference/RefWorkloadFactory.hpp
index 2c40053..606da82 100644
--- a/src/backends/reference/RefWorkloadFactory.hpp
+++ b/src/backends/reference/RefWorkloadFactory.hpp
@@ -67,6 +67,9 @@
     std::unique_ptr<IWorkload> CreateActivation(const ActivationQueueDescriptor& descriptor,
                                                 const WorkloadInfo& info) const override;
 
+    std::unique_ptr<IWorkload> CreateArgMinMax(const ArgMinMaxQueueDescriptor& descriptor,
+                                               const WorkloadInfo& info) const override;
+
     std::unique_ptr<IWorkload> CreateSoftmax(const SoftmaxQueueDescriptor& descriptor,
                                              const WorkloadInfo& info) const override;