IVGCVSW-5363 Add Unmap layer and Unmap workload

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
Change-Id: Ie5ecfa67e4763d0c058905592fe2e2fd7315f85c
diff --git a/src/backends/backendsCommon/UnmapWorkload.hpp b/src/backends/backendsCommon/UnmapWorkload.hpp
new file mode 100644
index 0000000..7f13f0d
--- /dev/null
+++ b/src/backends/backendsCommon/UnmapWorkload.hpp
@@ -0,0 +1,19 @@
+//
+// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+#pragma once
+
+#include "Workload.hpp"
+
+namespace armnn
+{
+
+class UnmapWorkload : public BaseWorkload<UnmapQueueDescriptor>
+{
+public:
+    UnmapWorkload(const UnmapQueueDescriptor& descriptor, const WorkloadInfo& info);
+    void Execute() const override;
+};
+
+} //namespace armnn