COMPMID-1367: Enable NHWC in graph examples

Change-Id: Iabc54a3a1bdcd46a9a921cda39c7c85fef672b72
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/141449
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/graph/frontend/Layers.h b/arm_compute/graph/frontend/Layers.h
index 197d2ea..02ef569 100644
--- a/arm_compute/graph/frontend/Layers.h
+++ b/arm_compute/graph/frontend/Layers.h
@@ -595,7 +595,7 @@
         }
         else if(_branch_merge_method == BranchMergeMethod::DEPTH_CONCATENATE)
         {
-            // Collect tail nodes and perform DepthConcatenate
+            // Collect tail nodes and concatenate
             std::vector<NodeIdxPair> nodes;
             for(auto &ss : _sub_streams)
             {
@@ -608,14 +608,14 @@
                     }
                 }
             }
-            nid = GraphBuilder::add_depth_concatenate_node(s.graph(), common_params, nodes);
+            nid = GraphBuilder::add_concatenate_node(s.graph(), common_params, nodes, DataLayoutDimension::CHANNEL);
         }
         else
         {
             ARM_COMPUTE_ERROR_ON(_sub_streams.size() != 2);
             NodeIdxPair input0 = { _sub_streams[0]->tail_node(), 0 };
             NodeIdxPair input1 = { _sub_streams[1]->tail_node(), 0 };
-            nid                = GraphBuilder::add_elementwise_node(s.graph(), common_params, input0, input1, EltwiseOperation::ADD);
+            nid                = GraphBuilder::add_elementwise_node(s.graph(), common_params, input0, input1, EltwiseOperation::Add);
         }
         return nid;
     }