[PATCH v2] serial: 8250_uniphier: add earlycon support

[Peter Hurley]

On 10/29/2015 10:46 PM, Masahiro Yamada wrote:
> This reuses the code of drivers/tty/serial/8250/8250_early.c except
>
>    - Overwrite device->port.iotype and device->port.regshift for
>      UPIO_MEM32 because of_setup_earlycon() has set them for UPIO_MEM.
>
>    - Set device->baud to zero to prevent early8250_setup() from
>      initializing the divisor register because port->uartclk does not
>      match the frequency expected by this hardware.

Reviewed-by: Peter Hurley <peter at hurleysoftware.com>