Add custom inittab and sysinit script. ...

The inittab calls the sysinit script, which mounts the filesystems and does everything required for the system to bootup. It then calls /etc/init.d/rcS to execute eudev.

Add some runit scripts.

board/MynaPlayer odyssey: provide hopefully temporary init.d replacement. ...

Currently eudev needs a script in /etc/init.d to work. But we don't want all the other sysvinit scripts provided by buildroot, so we more the directory in the postbuild script, and remplace it with our own.

board/MynaPlayer odyssey: migrate to busybox. ...

This is very early work, and is still unfinished.

board/MynaPlayer odyssey: modify boot spec entry. ...

The bootloader specs file doesn't set earlycon anymore (this was unsupported), and rootwait is now set to have the kernel wait for the root device (required when booting without an initramfs).

boot: Add systemd.log_color=off to aid serial logging ...

Colors just spew escape codes all over the log file, so remove them.

Initial commit.