rockchip: pinctrl: Add rk3328 gmac pinctrl support

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@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2 files changed