IVGCVSW-3076 Add ConcatLayer methods to public API

!android-nn-driver:1120

Change-Id: I5192fa3deb4ea9766d38ad0bf4dfbfa0b4924c41
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
diff --git a/src/armnnTfParser/TfParser.cpp b/src/armnnTfParser/TfParser.cpp
index d7cfba8..e5948d5 100755
--- a/src/armnnTfParser/TfParser.cpp
+++ b/src/armnnTfParser/TfParser.cpp
@@ -2120,7 +2120,7 @@
 
     // Update the output shape
     mergeDims[concatDim] = mergeDim;
-    armnn::IConnectableLayer *layer = m_Network->AddMergerLayer(concatDescriptor, nodeDef.name().c_str());
+    armnn::IConnectableLayer *layer = m_Network->AddConcatLayer(concatDescriptor, nodeDef.name().c_str());
 
     layer->GetOutputSlot(0).SetTensorInfo(armnn::TensorInfo(mergeDims, DataType::Float32));