Merge branch 's390-qeth-fixes'

Julian Wiedmann says:

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s390/qeth: fixes 2019-12-23

please apply the following patch series for qeth to your net tree.

This brings two fixes for errors during device initialization, deals with
several issues in the vnicc control code, and adds a missing lock.
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Signed-off-by: David S. Miller <davem@davemloft.net>