IVGCVSW-2646 Add Serializer & Deserializer for Conv2D

 * Added Convolution2dLayer to Schema.fbs
 * Added ConstTensorData serialization and deserialization helper functions
 * Added Convolution2d serialization and deserialization support
 * Added serialization and deserialization unit tests

Change-Id: Id376c08410ae01511972a2b0abdce9cfab907462
Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
diff --git a/src/armnnSerializer/SerializerUtils.hpp b/src/armnnSerializer/SerializerUtils.hpp
index 72a8806..06f3076 100644
--- a/src/armnnSerializer/SerializerUtils.hpp
+++ b/src/armnnSerializer/SerializerUtils.hpp
@@ -11,6 +11,8 @@
 namespace armnnSerializer
 {
 
+armnn::armnnSerializer::ConstTensorData GetFlatBufferConstTensorData(armnn::DataType dataType);
+
 armnn::armnnSerializer::DataType GetFlatBufferDataType(armnn::DataType dataType);
 
 armnn::armnnSerializer::DataLayout GetFlatBufferDataLayout(armnn::DataLayout dataLayout);