[U-Boot] [U-Boot, v2, 06/19] rockchip: Drop note about supporting other SoCs

[Philipp Tomsich]

> Quite a wide range of Rockchip SoCs are supported in mainline U-Boot now,
> so drop the comment about needing to add more.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
> Changes in v2: None
> 
>  doc/README.rockchip | 9 +--------
>  1 file changed, 1 insertion(+), 8 deletions(-)
> 

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