video: auo_k190x: add driver for AUO-K1901 variant

This controller not only supports higher resolutions than the K1900
but concurrent updates as well. This results in a generally higher
display speed.

Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>