[U-Boot] [U-Boot, 01/10] rockchip: enable DEBUG_UART_BOARD_INIT by default

[Philipp Tomsich]

> All Rockchip SoCs use DEBUG_UART_BOARD_INIT to init per board
> UART IOMUX, enable it by default.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
>  arch/arm/Kconfig               | 2 ++
>  arch/arm/mach-rockchip/Kconfig | 3 ---
>  2 files changed, 2 insertions(+), 3 deletions(-)
> 

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>