macvlan: add support for "source" mode

This adds libnl support for new "source" mode.

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
diff --git a/libnl-route-3.sym b/libnl-route-3.sym
index 5f42fd2..448a617 100644
--- a/libnl-route-3.sym
+++ b/libnl-route-3.sym
@@ -956,5 +956,13 @@
 	rtnl_link_bridge_set_hwmode;
 	rtnl_link_bridge_hwmode2str;
 	rtnl_link_bridge_str2hwmode;
+	rtnl_link_macvlan_add_macaddr;
+	rtnl_link_macvlan_count_macaddr;
+	rtnl_link_macvlan_del_macaddr;
+	rtnl_link_macvlan_get_macaddr;
+	rtnl_link_macvlan_get_macmode;
+	rtnl_link_macvlan_macmode2str;
+	rtnl_link_macvlan_set_macmode;
+	rtnl_link_macvlan_str2macmode;
 } libnl_3_2_28;