fix compiling warning.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1555 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/mini2440/lcd.h

@@ -16,6 +16,6 @@
 
 #include <rtthread.h>
 
-void rt_hw_lcd_init();
+void rt_hw_lcd_init(void);
 
 #endif