viafb: Turn GPIO and i2c into proper platform devices

Another step toward making this thing a real multifunction device driver.

Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
diff --git a/drivers/video/via/via-gpio.h b/drivers/video/via/via-gpio.h
index 7b53f96..8281aea 100644
--- a/drivers/video/via/via-gpio.h
+++ b/drivers/video/via/via-gpio.h
@@ -8,8 +8,7 @@
 #ifndef __VIA_GPIO_H__
 #define __VIA_GPIO_H__
 
-extern int viafb_create_gpios(struct viafb_dev *vdev,
-		const struct via_port_cfg *port_cfg);
-extern int viafb_destroy_gpios(void);
 extern int viafb_gpio_lookup(const char *name);
+extern int viafb_gpio_init(void);
+extern void viafb_gpio_exit(void);
 #endif