dt-bindings: display: ltk500hd1829: add variant compatible for ltk101b4029w

Add the compatible for the ltk101b4029w panel, that has the same
manufacturer, general bringup and supplies but a different dsi-init-
sequence compared to the ltk500hd1829 .

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240215090515.3513817-3-heiko@sntech.de