ARM: S5PV310: Add support GPIOlib

This patch adds GPIOlib support for S5PV310 and S5PC210.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
[kgene.kim@samsung.com: Fix NR_IRQS]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>