drm/panel: simple: Add newhaven, nhd-4.3-480272ef-atxl LCD

Add support for newhaven,nhd-4.3-480272ef-atxl to panel-simple.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180618132242.8673-8-tomi.valkeinen@ti.com