[U-Boot] [U-Boot, v2, 17/19] rockchip: Implement spl_gpio in the GPIO driver

[Philipp Tomsich]

> Allow rockchip boards to use GPIOs before driver model is ready. This is
> really only useful for setting GPIOs to enable the early debug console, if
> needed on some platforms.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
> 
> Changes in v2: None
> 
>  arch/arm/include/asm/arch-rockchip/gpio.h | 23 ++++++++++++
>  drivers/gpio/rk_gpio.c                    | 46 +++++++++++++++++++++++
>  2 files changed, 69 insertions(+)
> 

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