IVGCVSW-4259 Add frontend and reference workload for UnaryOperationLayer

* Added new layer named ElementwiseUnary
* Deprecated existing Abs/Rsqrt layer functions
* Updated existing Abs/Rsqrt test infrastructure to use new layer
* Added boilerplate for new Exp,Neg,Sqrt elemwise op layers
* AbsQuantize test removed pending future commit
* Serialization support added

!android-nn-driver:2550

Change-Id: Ic595c645925e17b45db568187fd05646daf2e87f
Signed-off-by: josh minor <josh.minor@arm.com>
diff --git a/src/backends/backendsCommon/test/layerTests/ElementwiseUnaryTestImpl.cpp b/src/backends/backendsCommon/test/layerTests/ElementwiseUnaryTestImpl.cpp
new file mode 100644
index 0000000..a2c88a6
--- /dev/null
+++ b/src/backends/backendsCommon/test/layerTests/ElementwiseUnaryTestImpl.cpp
@@ -0,0 +1,14 @@
+//
+// Copyright © 2019 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "ElementwiseUnaryTestImpl.hpp"
+
+std::unique_ptr<armnn::IWorkload> CreateWorkload(
+    const armnn::IWorkloadFactory& workloadFactory,
+    const armnn::WorkloadInfo& info,
+    const armnn::ElementwiseUnaryQueueDescriptor& descriptor)
+{
+    return workloadFactory.CreateElementwiseUnary(descriptor, info);
+}
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