IVGCVSW-1783 refactor add/mul/div layers

Change-Id: Ic043030455b3cf8ad7f92fd0a75175c1827a95f4
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 09761af..802ca50 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -291,6 +291,8 @@
     src/armnn/layers/ActivationLayer.cpp
     src/armnn/layers/AdditionLayer.hpp
     src/armnn/layers/AdditionLayer.cpp
+    src/armnn/layers/ArithmeticBaseLayer.hpp
+    src/armnn/layers/ArithmeticBaseLayer.cpp
     src/armnn/layers/BatchNormalizationLayer.hpp
     src/armnn/layers/BatchNormalizationLayer.cpp
     src/armnn/layers/ConstantLayer.hpp