ARM: S3C24XX: Convert users of s3c2410_gpio_setpin to gpiolib API

This is a prerequisite for removal of deprecated s3c2410_gpio* API
from the Samsung gpiolib driver.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Guillaume Gourat <guillaume.gourat@nexvision.tv>
Cc: Michel Pollet <buserror@gmail.com>
Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>