uboot-phytec

nand_spl: Update nand_spl to support 2k page size NAND devices

This patch adds support for booting from 2k page sized NAND device
(e.g. Micron 29F2G08AAC).

Tested on AMCC Canyonlands.

Signed-off-by: Stefan Roese <sr@denx.de>