[U-Boot] [PATCH] atmel_usart: change register access to C structure

[Reinhard Meyer]

Dear Andreas Bießmann,
>  This patch introduces C structure definition for register footprint of atmel's
>  usart.
> 
> Signed-off-by: Andreas Bießmann <biessmann at corscience.de>

Applied to u-boot-atmel/at91.

Thanks,
Reinhard