ARM: S5PV210: Change to using s3c_gpio_cfgpin_range()

Change the code setting ranges of GPIO pins using s3c_gpio_cfgpin() to
use the recently introduced s3c_gpio_cfgpin_range().

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
[kgene.kim@samsung.com: coding-style fixes]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>