add RT_USING_CONSOLE option.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1340 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/lm3s/rtconfig.h

@@ -62,7 +62,8 @@
 // #define RT_USING_UART2
 // #define RT_USING_UART3
 
-/* SECTION: Console options */
+/* SECTION: Console options */
+#define RT_USING_CONSOLE
 /* the buffer size of console*/
 #define RT_CONSOLEBUF_SIZE	128