Update buidlroot to version 2016.08.1

bsp/buildroot/package/busybox/udhcpc.script

@@ -56,7 +56,16 @@ case "$1" in
 		cat $TMPFILE > $RESOLV_CONF
 		rm -f $TMPFILE
 
-		[ -n "$domain" ] && echo "search $domain # $interface" >> $RESOLV_CONF
+		# prefer rfc3359 domain search list (option 119) if available
+		if [ -n "$search" ]; then
+			search_list=$search
+		elif [ -n "$domain" ]; then
+			search_list=$domain
+		fi
+
+		[ -n "$search_list" ] &&
+			echo "search $search_list # $interface" >> $RESOLV_CONF
+
 		for i in $dns ; do
 			echo adding dns $i
 			echo "nameserver $i # $interface" >> $RESOLV_CONF