Merge branch 'dsa-avoid-cross-chip-vlan-sync'

Tobias Waldekranz says:

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net: dsa: Avoid cross-chip syncing of VLAN filtering

This bug has been latent in the source for quite some time, I suspect
due to the homogeneity of both typical configurations and hardware.

On singlechip systems, this would never be triggered. The only reason
I saw it on my multichip system was because not all chips had the same
number of ports, which means that the misdemeanor alien call turned
into a felony array-out-of-bounds access.
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Signed-off-by: David S. Miller <davem@davemloft.net>