IVGCVSW-3809 Refactor Elementwise Binary ops to use ElementwiseBinaryLayer

!armnn:9319

 * Refactored all functions to convert Add, Div, Maximum, Minimum, Mul
   and Sub to use ElementwiseBinary layers instead.

Signed-off-by: Teresa Charlin <teresa.charlinreyes@arm.com>
Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: Ic05885cd8692e7f1b7032862fb4a395af70e0bcd

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: If9717d6ab236d97c76f6cd39b96bde86c81e4382
diff --git a/1.1/HalPolicy.hpp b/1.1/HalPolicy.hpp
index 18bb705..e1feb83 100644
--- a/1.1/HalPolicy.hpp
+++ b/1.1/HalPolicy.hpp
@@ -1,5 +1,5 @@
 //
-// Copyright © 2017 Arm Ltd. All rights reserved.
+// Copyright © 2017-2021,2023 Arm Ltd and Contributors. All rights reserved.
 // SPDX-License-Identifier: MIT
 //
 
@@ -31,8 +31,11 @@
     static bool ConvertOperation(const Operation& operation, const Model& model, ConversionData& data);
 
 private:
-    static bool ConvertDiv(const Operation& operation, const Model& model, ConversionData& data);
-    static bool ConvertSub(const Operation& operation, const Model& model, ConversionData& data);
+    static bool ConvertElementwiseBinary(const Operation& operation,
+                                         const Model& model,
+                                         ConversionData& data,
+                                         armnn::BinaryOperation binaryOperation);
+
     static bool ConvertMean(const Operation& operation, const Model& model, ConversionData& data);
     static bool ConvertPad(const Operation& operation, const Model& model, ConversionData& data);
     static bool ConvertSpaceToBatchNd(const Operation& operation, const Model& model, ConversionData& data);