The Renesas R-Car Gen2 and Gen3 SoCs have internal LVDS encoders. Add
corresponding device tree bindings.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Reviewed-by: NNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>