add RT_DEBUG option.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1342 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/lm3s/rtconfig.h

@@ -16,7 +16,7 @@
 
 /* SECTION: RT_DEBUG */
 /* Thread Debug*/
-/* #define RT_DEBUG*/
+#define RT_DEBUG
 /* #define RT_THREAD_DEBUG */
 
 /* Using Hook*/