[U-Boot] [U-Boot,4/8] rockchip: rk3128: add pinctrl driver

[Philipp Tomsich]

> Add rk3128 pinctrl driver and grf/iomux structure definition.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
>  arch/arm/include/asm/arch-rockchip/grf_rk3128.h | 551 ++++++++++++++++++++++++
>  drivers/pinctrl/Kconfig                         |  10 +
>  drivers/pinctrl/rockchip/Makefile               |   4 +-
>  drivers/pinctrl/rockchip/pinctrl_rk3128.c       | 192 +++++++++
>  4 files changed, 755 insertions(+), 2 deletions(-)
>  create mode 100644 arch/arm/include/asm/arch-rockchip/grf_rk3128.h
>  create mode 100644 drivers/pinctrl/rockchip/pinctrl_rk3128.c
> 

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