IVGCVSW-7172 Add ElementwiseBinary (Subtraction & Multiplication) support to TOSA Reference Backend

 * Removed AdditionOperator and moved to new ElementwiseBinaryOperator.

Signed-off-by: Nikhil Raj <nikhil.raj@arm.com>
Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: I8ce20f7575d68334aadcd176827bca3db53d0052
diff --git a/src/backends/tosaCommon/operatorMappings/ElementwiseBinaryOperator.hpp b/src/backends/tosaCommon/operatorMappings/ElementwiseBinaryOperator.hpp
new file mode 100644
index 0000000..86031c6
--- /dev/null
+++ b/src/backends/tosaCommon/operatorMappings/ElementwiseBinaryOperator.hpp
@@ -0,0 +1,20 @@
+//
+// Copyright © 2022 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include "TosaOperatorUtils.hpp"
+
+#include <Layer.hpp>
+
+#include <tosa_serialization_handler.h>
+
+using namespace armnn;
+using namespace tosa;
+
+TosaSerializationBasicBlock* ConvertElementwiseBinaryToTosaOperator(const Layer* layer,
+                                                                    const LayerType type,
+                                                                    const std::vector<const TensorInfo*>& inputs,
+                                                                    const std::vector<const TensorInfo*>& outputs);
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