busybox: fix usage string in S01logging

In busybox fix the S01logging usage text to
document the "reload" target.

Signed-off-by: Florian La Roche <F.LaRoche@pilz.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/busybox/S01logging

@@ -33,7 +33,7 @@ case "$1" in
 	start
 	;;
   *)
-	echo "Usage: $0 {start|stop|restart}"
+	echo "Usage: $0 {start|stop|restart|reload}"
 	exit 1
 esac