Add support for Hitachi tx18d42vm LVDS LCD panels, these panels have a
lcd controller which needs to be initialized over SPI, once that is
done they work like a regular LVDS panel.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NAnatolij Gustschin <agust@denx.de>
Acked-by: NIan Campbell <ijc@hellion.org.uk>