IVGCVSW-3823 Add CL workload support for ABS

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: I802bd882da4adcc1e7e52c772771e743143745fa
diff --git a/src/backends/cl/workloads/ClAbsWorkload.hpp b/src/backends/cl/workloads/ClAbsWorkload.hpp
new file mode 100644
index 0000000..763cafc
--- /dev/null
+++ b/src/backends/cl/workloads/ClAbsWorkload.hpp
@@ -0,0 +1,28 @@
+//
+// Copyright © 2017 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <backendsCommon/Workload.hpp>
+
+#include <arm_compute/core/Error.h>
+#include <arm_compute/runtime/CL/functions/CLElementWiseUnaryLayer.h>
+
+namespace armnn
+{
+
+arm_compute::Status ClAbsWorkloadValidate(const TensorInfo& input, const TensorInfo& output);
+
+class ClAbsWorkload : public BaseWorkload<AbsQueueDescriptor>
+{
+public:
+    ClAbsWorkload(const AbsQueueDescriptor& descriptor, const WorkloadInfo& info);
+    virtual void Execute() const override;
+
+private:
+    mutable arm_compute::CLAbsLayer m_AbsLayer;
+};
+
+} // namespace armnn