[PATCH] drop some per-board cruft

[Stefan Reinauer]

See patch.

[Peter Stuge]

Stefan Reinauer wrote:
> Set USBDEBUG_DEFAULT_PORT in all southbridges and use that value
> to unify calls to *_enable_usbdebug()
> rename *_enable_usbdebug() to enable_usbdebug()
> move enable_usbdebug() to generic romstage console init code
> and drop it from the individual romstage.c files.
>
> Something similar should happen to the uart init:
> uart_init() can go into console.c right now
> superio init should go into a function local_uart_init() defined in
> romstage.c and be called from console_init, too.
>
> Signed-off-by: Stefan Reinauer

Acked-by: Peter Stuge