Merge branch 's390-next'

Julian Wiedmann says:

====================
s390/qeth: updates 2017-12-27

please apply some post-christmas leftovers for 4.16.
Two patches to improve IP address management on L3, and two that add
support to auto-config the transport mode on z/VM VNICs.
Note that one patch in the series touches arch/s390 (acked by Martin).
====================

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