1. fix a bug in initliazing map beacon interval. 2. fix not send MESH_EVENT_ROUTING_TABLE_REMOVE when MESH_NWK_CHILD_DISCONNECTED. 3. fix a bug in returning roots ie len.
@@ -1 +1 @@
-Subproject commit 6657b2f40e498667fde7d31cdbc17b8ef581f93c
+Subproject commit 5fc06965e5eaa420dc69cbafd35235f508d6acea