fixup! gnrc/rpl: float DODAG during local repair

Author: elenaf9

sys/include/net/gnrc/rpl.h

@@ -151,6 +151,7 @@
 #include "net/gnrc/rpl/dodag.h"
 #include "net/gnrc/rpl/of_manager.h"
 #include "net/fib.h"
+#include "time_units.h"
 #include "trickle.h"
 
 #ifdef MODULE_NETSTATS_RPL