Merge branch 's390-qeth-updates-2020-11-17'

Julian Wiedmann says:

====================
s390/qeth: updates 2020-11-17

This brings some cleanups, and a bunch of improvements for our
.get_link_ksettings() code.
====================

Link: https://lore.kernel.org/r/20201117161520.1089-1-jwi@linux.ibm.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>