ARM s3c boards: Do not hardcode image sizes ...

The existing nand_boot functions all do the same, so move it to
a common place. To be flexible enough for future boards the real
image size is used instead of hardcoded 256k.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Juergen Beisert <jbe@pengutronix.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

Make S3C24xx config options available for all S3Cs ...

Signed-off-by: Alexey Galakhov <agalakhov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

commands: remove struct command pointer from commands ...

This is unused in all commands and thus can be removed.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MTD/NAND/S3C: re-add change due to API change ...

Commit 88ce7ef has changed the API and commit
b29b8f4 has moved the S3C24xx NAND driver
file. With the move the API change in the S3C24xx NAND driver was lost.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MACH SAMSUNG/S3C: Use the correct CPU family name to reflect NAND driver's usage ...

The aready existing NAND controller driver in Barebox is for the S3C24XX family
only. Change the name of the file to reflect this fact (and free the way to add
more recent Samsung NAND controllers)

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>