[U-Boot] [U-Boot, v2, 4/4] rockchip: enable rockusb for all rockchip SoCs

[Philipp Tomsich]

> Rockusb will be used by all the rockchip SoCs, enable it by
> default in Kconfig, and it can be work if USB gadget is available.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
> Changes in v2: None
> 
>  arch/arm/Kconfig | 2 ++
>  1 file changed, 2 insertions(+)
> 

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