Verified DHCPC on the C5471 EVM

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@438 42af7a65-404d-4744-a932-0658087f49c3

examples/uip/main.c

@@ -230,6 +230,7 @@ int user_start(int argc, char *argv[])
     {
       sleep(3);
       printf("main: Still running\n");
+      fflush(stdout);
     }
   return 0;
 }