backlight: ktd253: Support KTD259

The KTD259 works just like KTD253 so add this compatible
to the driver.

Signed-off-by: Linus Walleij <[e-mail]>
Reviewed-by: Daniel Thompson <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/video/backlight/ktd253-backlight.c

···
 
 static const struct of_device_id ktd253_backlight_of_match[] = {
 	{ .compatible = "kinetic,ktd253" },
+	{ .compatible = "kinetic,ktd259" },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, ktd253_backlight_of_match);