Patch from Lucas Correia Villa Real

This patch adds definitions to GPIO registers for the S3C2400 into
include/asm-arm/arch-s3c2410/regs-gpio.h.
Signed-off-by: NLucas Correia Villa Real <lucasvr@gobolinux.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>