Merge commit '70e2f11a0c79969e66b51085571bbe9f4dfb7ded' into nanostack-as_subtree

* commit '70e2f11a0c79969e66b51085571bbe9f4dfb7ded':
  Squashed 'connectivity/libraries/nanostack-libservice/' changes from c6cae6992a..67d7b93ec6

Author: Arto Kinnunen

connectivity/libraries/nanostack-libservice/mbed-client-libservice/ns_list.h

@@ -23,8 +23,18 @@
 extern "C" {
 #endif
 
+/** \defgroup ns_list Linked list support library.
+ *
+ * The ns_list.h file provides a doubly-linked list/queue, providing O(1)
+ * performance for all insertion/removal operations, and access to either
+ * end of the list.
+ *
+ * See \ref ns_list.h for documentation.
+ */
+
 /** \file
- * \brief Linked list support library
+ * \ingroup ns_list
+ * \brief Linked list support library.
  *
  * The ns_list.h file provides a doubly-linked list/queue, providing O(1)
  * performance for all insertion/removal operations, and access to either