At this time, Kodi on fbdev is only supported on 3.10 kernel
Use this minimal image: 20160706 Minimal Image
After the first boot is complete you can update and install kodi.
apt-get update apt-get upgrade apt-get dist-upgrade apt-get install linux-image-xu3 apt-get install kodi-fbdev
After that you can run kodi by just typing kodi on the command line.
You can also add kodi to /etc/rc.local to start on boot automatically.