Merge branch 'dsa-mv88e6xxx-some-fixes'

Uwe Kleine-König says:

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net: dsa: mv88e6xxx: some fixes

these patches target net-next and got approved by Andrew Lunn.

Compared to (implicit) v1, I dropped the patch that I didn't know if it
was right because of missing documentation on my side. But Andrew
already cared for that in a patch that is now adfccf118211 in net-next.
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Signed-off-by: David S. Miller <davem@davemloft.net>