[U-Boot] [U-Boot, v2, 15/19] rockchip: rk3399: Add ROCKCHIP_DEVICE_SETTINGS to set env

[Philipp Tomsich]

> Some boards use different stdio environment variables from the default.
> Provide a #define for this which can be set before including the header
> file.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> 
> Changes in v2: None
> 
>  include/configs/rk3399_common.h | 5 +++++
>  1 file changed, 5 insertions(+)
> 

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