serial: s3c24xx: Move serial registration from serial_initialize()

Move the registration of s3c24xx_serialN_device ports from
default serial_initialize() into driver specific function called from
serial_initialize(). This slims down the serial_initialize() call
to a bare tracker of all possible serial port registration routines
in U-Boot.

The newly implemented s3c24xx_serial_initialize() function, which is
implemented inside of the serial_s3c24xx driver allows encapsulation
of s3c24xx_serialN_device within the serial_s3c24xx driver itself.

Also, remove the exports of s3c24xx_serialN_device from include/serial.h
as they are no longer needed. This is simply because the implementation of
default_serial_console() is wrapped into the serial_s3c24xx driver and
the default console is picked by CONFIG_SERIAL<N> macro in config file.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Tom Rini <trini@ti.com>
Cc: C Nauman <cnauman@diagraph.com>

common/serial.c

@@ -41,6 +41,7 @@ static void serial_null(void)
 		__attribute__((weak, alias("serial_null")));
 
 serial_initfunc(mpc8xx_serial_initialize);
+serial_initfunc(s3c24xx_serial_initialize);
 
 void serial_register(struct serial_device *dev)
 {
@@ -83,11 +84,7 @@ void serial_initialize(void)
 #if defined(CONFIG_STUART)
 	serial_register(&serial_stuart_device);
 #endif
-#if defined(CONFIG_S3C2410)
-	serial_register(&s3c24xx_serial0_device);
-	serial_register(&s3c24xx_serial1_device);
-	serial_register(&s3c24xx_serial2_device);
-#endif
+	s3c24xx_serial_initialize();
 #if defined(CONFIG_S5P)
 	serial_register(&s5p_serial0_device);
 	serial_register(&s5p_serial1_device);

drivers/serial/serial_s3c24x0.c

@@ -323,4 +323,11 @@ __weak struct serial_device *default_serial_console(void)
 #error "CONFIG_SERIAL? missing."
 #endif
 }
+
+void s3c24xx_serial_initialize(void)
+{
+	serial_register(&s3c24xx_serial0_device);
+	serial_register(&s3c24xx_serial1_device);
+	serial_register(&s3c24xx_serial2_device);
+}
 #endif /* CONFIG_SERIAL_MULTI */

include/serial.h

@@ -57,12 +57,6 @@ extern struct serial_device uartlite_serial2_device;
 extern struct serial_device uartlite_serial3_device;
 #endif
 
-#if defined(CONFIG_S3C2410)
-extern struct serial_device s3c24xx_serial0_device;
-extern struct serial_device s3c24xx_serial1_device;
-extern struct serial_device s3c24xx_serial2_device;
-#endif
-
 #if defined(CONFIG_S5P)
 extern struct serial_device s5p_serial0_device;
 extern struct serial_device s5p_serial1_device;