uboot-imx

ARM: omap3_logic: Enable NAND unlocking during Falcon mode

Falcon mode was already working with SD card.  This enables the
unlocking of NAND to allow the NAND read & write.  This also
expands the README file based on the am335x describing how to
setup Falcon mode.

Signed-off-by: Adam Ford <aford173@gmail.com>