Patch from Ben Dooks

Add generic values for the parameters to the
s3c2410_gpio_cfgpin() function, so that a caller
does not need to know the exact constant for
the specified pin.

This is very useful for the case where a driver
is passed a gpio pin number and needs to reconfigure
the pin's function.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>