ppc4xx: Prepare Bamboo port for NAND booting support

This patch updates the "normal" Bamboo NOR booting port, so
that it is compatible with the coming soon NAND booting
Bamboo port.

It also enables the 2nd NAND flash on the Bamboo.

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