In modern Poky the facade is gone and the data dictionary needs
to be accessed directly. This commit is catching up with it. It
was build tested on dora as well. I have not checked if it is
changing the checksums of a dora build.
Make sure that there is at least a basic depmod in the image. This
is needed as fallback for kernel upgrades that execute depmod in the
postinst script. The dora busybox will always have it so we should
have it too. Sync the defconfig with dora.
Addresses: SYS#231