ARM: S5PV210: Change to using s3c_gpio_cfgrange_nopull()

Change code setting special-function and no pull-up to use
the s3c_gpio_cfgrange_nopull() wrapper.

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