We messed up the ordering in our default configs for PPC. The top entries
are generic entries, then come sections that indicate that features are only
in because of a special feature (such as PReP).

Fix the ordering again and while at it add eTSEC support to the ppc64 target
so that we can spawn eTSEC adapters with qemu-system-ppc64.
Signed-off-by: NAlexander Graf <agraf@suse.de>