获取不到ip,dhcp超时时间是30s，把超时时间增大到90s.patch

commit 2d1de25c4bff1d60a17ae274a6d9fff154272446
Author: blb <blb@rock-chips.com>
Date:   Mon Jun 1 11:04:00 2015 +0800

    Increase dhcpcd's Timeout from 30s to 60s for dealing with terrible network.

diff --git a/libnetutils/dhcp_utils.c b/libnetutils/dhcp_utils.c
index e1df874..3b6f972 100644
--- a/libnetutils/dhcp_utils.c
+++ b/libnetutils/dhcp_utils.c
@@ -218,10 +218,10 @@ int dhcp_do_request(const char *interface,
 
     /* Start the daemon and wait until it's ready */
     if (property_get(HOSTNAME_PROP_NAME, prop_value, NULL) && (prop_value[0] != '\0'))
-        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-f %s -h %s %s", DAEMON_NAME,
+        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-f %s -h %s %s -t 60", DAEMON_NAME,
                  p2p_interface, DHCP_CONFIG_PATH, prop_value, interface);
     else
-        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-f %s %s", DAEMON_NAME,
+        snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-f %s %s -t 60", DAEMON_NAME,
                  p2p_interface, DHCP_CONFIG_PATH, interface);
     memset(prop_value, '\0', PROPERTY_VALUE_MAX);
     property_set(ctrl_prop, daemon_cmd);
@@ -231,7 +231,7 @@ int dhcp_do_request(const char *interface,
     }
 
     /* Wait for the daemon to return a result */
-    if (wait_for_property(result_prop_name, NULL, 30) < 0) {
+    if (wait_for_property(result_prop_name, NULL, 60) < 0) {
         snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP to finish");
         return -1;
     }
@@ -355,13 +355,13 @@ int dhcp_do_request_renew(const char *interface,
     property_set(result_prop_name, "");
 
     /* Start the renew daemon and wait until it's ready */
-    snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s", DAEMON_NAME_RENEW,
+    snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s -t 60", DAEMON_NAME_RENEW,
             p2p_interface, interface);
     memset(prop_value, '\0', PROPERTY_VALUE_MAX);
     property_set(ctrl_prop, daemon_cmd);
 
     /* Wait for the daemon to return a result */
-    if (wait_for_property(result_prop_name, NULL, 30) < 0) {
+    if (wait_for_property(result_prop_name, NULL, 60) < 0) {
         snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP Renew to finish");
         return -1;
     }