We already maintain an array of VLANs used by the switch so we can
simply iterate over it to report the occupancy via devlink.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>