Add the necessary gpio configuration helper for the devices which
have a single-bit pull-up resistor disabled.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add support for s3c_gpio_setcfg() and s3c_gpio_setpull() implementations
to get ready for removal of the specific code being used by s3c24xx.

Also rename the s3c_gpio_setcfg_s3c24xx_banka to s3c_gpio_setcfg_s3c24xx_a
as seen in the header file to correct a build warning.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Rename mach-s3c2410/include/mach/gpio-core.h to mach/gpio-track.h so that
it can be included by <plat/gpio-core.h> when needed.

Eliminate all other empty gpio-core.h files and just include the
<plat/gpio-core.h> as necessary.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The arch/arm/plat-s3c/gpio-config.c file is common to pretty much all the Samsung
SoCs, so move it to arch/arm/plat-samsung
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Fix gpio-config off-by-one bug. Without this patch, touching GPA0 pin on
S3C64XX platform causes kernel oops.
Reviewed-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add an export of the two GPIO configuration calls
s3c_gpio_cfgpin and s3c_gpio_setpull to allow modules
to use them (such as ASoC drivers)
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add new GPIO configuration calls that mesh with the
new gpiolib support.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>