* Prepare xu4 edge for 5.16.y, move current of imx6 to 5.15.y and edge to 5.16.y
- fix bootsplash on 5.16.y
* rk322x: advance current to 5.15 and edge to 5.16
* rockchip: advance current kernel to 5.15, edge to 5.16
* - adjust configs
- fix bootsplash patches
- adjust aufs
* Switch sunxi / sunxi64 current to 5.15.y, edge to 5.16.y
- cleanup bootsplash patches
- adjust configs
* Update mvebu64
Co-authored-by: Paolo Sabatino <paolo.sabatino@gmail.com>