IVGCVSW-4622 Add NEON FILL Workload

* Added Neon workload for Fill Operator
* Enabled Fill operator tests on Neon
* NEFill function does not have validate() function yet
  IsLayerSupported() function return true at the moment
* Added INT32 supported type for CpuRef

Signed-off-by: Sadik Armagan <sadik.armagan@arm.com>
Change-Id: I17bf5ec13750f46322a30653e15ba2a514f61f08
diff --git a/src/backends/neon/workloads/NeonFillWorkload.hpp b/src/backends/neon/workloads/NeonFillWorkload.hpp
new file mode 100644
index 0000000..40e4aa6
--- /dev/null
+++ b/src/backends/neon/workloads/NeonFillWorkload.hpp
@@ -0,0 +1,25 @@
+//
+// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <backendsCommon/WorkloadData.hpp>
+#include <backendsCommon/Workload.hpp>
+#include <arm_compute/runtime/IFunction.h>
+#include <arm_compute/core/Error.h>
+
+namespace armnn {
+
+class NeonFillWorkload : public BaseWorkload<FillQueueDescriptor>
+{
+public:
+    NeonFillWorkload(const FillQueueDescriptor& descriptor, const WorkloadInfo& info);
+    void Execute() const override;
+
+private:
+    std::unique_ptr<arm_compute::IFunction> m_Layer;
+};
+
+} //namespace armnn