Merge branch 'net-bridge-add-per-vlan-state-option'

Nikolay Aleksandrov says:

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net: bridge: add per-vlan state option

This set adds the first per-vlan option - state, which uses the new vlan
infrastructure that was recently added. It gives us forwarding control on
per-vlan basis. The first 3 patches prepare the vlan code to support option
dumping and modification. We still compress vlan ranges which have equal
options, each new option will have to add its own equality check to
br_vlan_opts_eq(). The vlans are created in forwarding state by default to
be backwards compatible and vlan state is considered only when the port
state is forwarding (more info in patch 4).
I'll send the selftest for the vlan state with the iproute2 patch-set.

v2: patch 3: do full (all-vlan) notification only on vlan
    create/delete, otherwise use the per-vlan notifications only,
    rework how option change ranges are detected, add more verbose error
    messages when setting options and add checks if a vlan should be used.
====================

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

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