drm/panel: simple: add LOGIC Technologies LTTD800480070-L6WH-RT

Add support for the LOGIC Technologies, Inc LTTD800480070-L6WH-RT

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Co-developed-by: Søren Andersen <san@skov.dk>
Signed-off-by: Søren Andersen <san@skov.dk>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210805111944.13533-3-o.rempel@pengutronix.de