make the spi bus and the spi chipselect configurable for the lg4573 driver. Use it on the aristainetos boards. Signed-off-by: Heiko Schocher <hs@denx.de> Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Heiko Schocher <hs@denx.de>