serial: arm_dcc: Remove stdio structure support

Removed stdio structure ops support on arm_dcc
driver, and need to register with serial core
so-that it can access like remianing serial drivers.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

include/stdio_dev.h

@@ -83,9 +83,6 @@ struct list_head* stdio_get_list(void);
 struct stdio_dev* stdio_get_by_name(const char* name);
 struct stdio_dev* stdio_clone(struct stdio_dev *dev);
 
-#ifdef CONFIG_ARM_DCC
-int drv_arm_dcc_init(void);
-#endif
 #ifdef CONFIG_LCD
 int	drv_lcd_init (void);
 #endif