[PATCH V4 RESEND] serial: tegra: add serial driver

[Stephen Warren]

On 01/08/2013 03:57 AM, Laxman Dewangan wrote:
> NVIDIA's Tegra has multiple UART controller which supports:
> - APB DMA based controller fifo read/write.
> - End Of Data interrupt in incoming data to know whether end
>   of frame achieve or not.
> - HW controlled RTS and CTS flow control to reduce SW overhead.
> 
> Add serial driver to use all above feature.
> 
> Signed-off-by: Laxman Dewangan <ldewangan at nvidia.com>
> Acked-by: Alan Cox <alan at linux.intel.com>

The DT binding part of this patch,
Reviewed-by: Stephen Warren <swarren at nvidia.com>