dt-bindings: display: imx: add binding for i.MX8MP HDMI PVI

Add binding for the i.MX8MP HDMI parallel video interface block.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20240203165307.7806-8-aford173@gmail.com


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240203165307.7806-8-aford173@gmail.com