Fix this compile error:

In file included from lnstat.c:40:
lnstat.h:28: error: field 'last_read' has incomplete type
lnstat.h:29: error: field 'interval' has incomplete type

Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com>

diff -u -r iproute2-2.6.25/misc/lnstat.h iproute2.timeval/misc/lnstat.h
--- iproute2-2.6.25/misc/lnstat.h	Thu Apr 17 19:12:54 2008
+++ iproute2.timeval/misc/lnstat.h	Mon Aug 25 17:48:33 2008
@@ -2,6 +2,7 @@
 #define _LNSTAT_H
 
 #include <limits.h>
+#include <sys/time.h>
 
 #define LNSTAT_VERSION "0.02 041002"