* Add initial support for Odroid N2+
* Update C4 config and test booting
* Updates to C4, N2, N2+
- merge C4 and N2 legacy under meson64, same u-boot
- upgrade legacy kernel to meed DTB from mainline
- merge N2 and N2+, add a hack to display + in motd when N2+ is detected
- shortly spin N2 fan at startup
- merged N2 mainline and legacy boot script
- add upstream patches
* One of the regulators were breaking booting of Odroid N2
Co-authored-by: Werner <EvilOlaf@users.noreply.github.com>
