drm/panel: Add Ilitek ILI9805 panel driver

The GPM1790A0 panel is based on the Ilitek ILI9805 Controller.
Add a driver for it.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231207141723.108004-9-dario.binacchi@amarulasolutions.com


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231207141723.108004-9-dario.binacchi@amarulasolutions.com