netdev - [SKY2]: Fix VLAN unregistration

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Date:	Sun, 27 May 2007 20:44:04 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Stephen Hemminger <shemminger@...l.org>
CC:	Linux Netdev List <netdev@...r.kernel.org>,
	Ben Greear <greearb@...delatech.com>
Subject: [SKY2]: Fix VLAN unregistration

Fix sky2 disabling VLAN completely when the first vid is unregistered.

For some reason the VLAN code insists on the driver providing a
vlan_rx_kill_vid function even if only NETIF_F_HW_VLAN_RX and not
NETIF_F_HW_VLAN_FILTER is set, so this patch keeps an empty
function. This seems to be a bug though, vlan_rx_add_vid is only
required with NETIF_F_HW_VLAN_FILTER. Ben?

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