Merge branch 's390-qeth-next'

Julian Wiedmann says:

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s390/qeth: updates 2020-08-27

please apply the following patch series for qeth to netdev's net-next tree.

Patch 8 makes some improvements to how we handle HW address events,
avoiding some uncertainty around processing stale events after we
switched off the feature.
Except for that it's all straight-forward cleanups.
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Signed-off-by: David S. Miller <davem@davemloft.net>