Merge branch 'bridge-vlan'

Nikolay Aleksandrov says:

====================
bridge: vlan: cleanups & fixes (part 2)

This is the second follow-up set with one fix (patch 01) and more cleanups
(patches 02,03 and 04). These are minor compared to the previous ones and
should be the last before taking on the optimization changes on the
fast-path.
====================

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