* meson-s4t7: bump u-boot to khadas-vims-u-boot-2019.01-v1.6-release
* Use khadas default bootargs as much as possible
* Add new hook to allow copying code into kernel
* meson-s4t7: legacy: Switch to 5.15 kernel
* meson-s4t7: add kernel-config for 5.15 kernel
* device tree overlays for 5.15 kernel for vim1s and vim4
* restructure packaging of bsp files for vim1s/vim4
* silence vblank warning on boot
* Remove display workaround as it doesn't work with 5.15 kernel
* Remove 5.4 kernel patches
* Change conf to csc
* Bring back to stable
* Remove BPI Pro
* Move media kernel to csc
* Move Opi prime back as its used as a test subject
* Retire Clearfog pro
* Remove Rock64
* Retire Helios4 too
* Move nanopi r5c from csc to wip as we have a volonteer
* Promote recent Khadas boards.
* Change status of Opi one as maintainer responded
