pia335x-mmi: added lcd support

Signed-off-by: Marian Lüder <m.lueder@pironex.de>
pia335x-mmi: merged mmc0 init

Signed-off-by: Marian Lüder <m.lueder@pironex.de>
pia335x-mmi: reactivated cpsw init

Signed-off-by: Marian Lüder <m.lueder@pironex.de>
pia335x-mmi: added more detailed debug info

Signed-off-by: Marian Lüder <m.lueder@pironex.de>
pia335x-mmi: moved board specific initialization to board setup

Signed-off-by: Marian Lüder <m.lueder@pironex.de>