COMPMID-417: Add grouping in convolution layer

-Adds grouping support in convolution layer
-Adds Normalization layer node in graph
-Adds alexnet example
-Fixes FullyConnectedLayer output autoconfigure (works only for 1d batch
space)

Change-Id: I5bd75f9a8b08cfd68f7c34745150266c2bc4221f
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/89518
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/utils/TypePrinter.h b/utils/TypePrinter.h
index 7580348..041ec18 100644
--- a/utils/TypePrinter.h
+++ b/utils/TypePrinter.h
@@ -264,6 +264,13 @@
     return str.str();
 }
 
+/** Formatted output of @ref NormalizationLayerInfo. */
+inline ::std::ostream &operator<<(::std::ostream &os, const NormalizationLayerInfo &info)
+{
+    os << info.type();
+    return os;
+}
+
 /** Formatted output of the PoolingType type. */
 inline ::std::ostream &operator<<(::std::ostream &os, const PoolingType &pool_type)
 {