Merge branch 's390-qeth-next'

Julian Wiedmann says:

====================
s390/qeth: updates 2018-08-09

one more set of patches for net-next. This is all sorts of cleanups and
more refactoring on the way to using netdev_priv. Please apply.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>