Integrate meta-seconorth-mtk/kirkstone_dual-lvds

Commit: seco-ne/yocto/layers/meta-seconorth-mtk@87f5d771

dtbo:genio:display-lvds-*.dts: adapted for bugfixed mtk_dsi.c

setting the bridge-registers via i2c-dummy is no longen needed, this may save a lot of time in the future