pia335x: enable ethernet support via MII2

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
pia335x: board init info output for mmc0

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>
pia335x: add NAND support

Signed-off-by: Björn Krombholz <b.krombholz@pironex.de>