rockchip: pinctrl: Add rk322x gmac pinctrl support

Set gmac pins iomux and rgmii tx pins to 12ma drive-strength,
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>
1 file changed