uboot-imx

rockchip: pinctrl: rk3399: add support for the HDMI I2C pins

To add HDMI support for the RK3399, this commit provides the needed
pinctrl functionality to configure the HDMI I2C pins (used for reading
the screen's EDID).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>