[U-Boot] [U-Boot, 1/3] rockchip: rk3188: add -u-boot.dtsi for rock-rk3188

[Philipp Tomsich]

> We should a -u-boot.dtsi for those config need by U-Boot only,
> and other part sync with kernel.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
>  arch/arm/dts/rk3188-radxarock-u-boot.dtsi | 18 ++++++++++++++++++
>  arch/arm/dts/rk3188-radxarock.dts         |  6 +-----
>  arch/arm/dts/rk3188.dtsi                  |  2 --
>  3 files changed, 19 insertions(+), 7 deletions(-)
>  create mode 100644 arch/arm/dts/rk3188-radxarock-u-boot.dtsi
> 

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