[U-Boot] [U-Boot, v3, 07/20] rockchip: pinctrl: Add rk3328 gmac pinctrl support

[Philipp Tomsich]

> Need to set gmac m1 pins iomux, gmac m0 tx pins, select bit2
> and bit10 at com iomux register. After that, set rgmii m1 tx
> pins to 12ma drive-strength, and clean others to 2ma.
> 
> Signed-off-by: David Wu <david.wu at rock-chips.com>
> ---
> 
> Changes in v3:
> - adhere to the established way of writing this to avoid future confusion
> - use defined symbolic constants for drive-strength
> 
> Changes in v2:
> - New patch
> 
>  arch/arm/include/asm/arch-rockchip/grf_rk3328.h |   1 -
>  drivers/pinctrl/rockchip/pinctrl_rk3328.c       | 275 ++++++++++++++++++++++++
>  2 files changed, 275 insertions(+), 1 deletion(-)
> 

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