ixgbe: report link state for VF devices

The link state of VF devices can be controlled via "ip link set", but the
current state (auto/disabled) is not reported by "ip link show".

Update ixgbe_ndo_get_vf_config() to make this info available to userspace.
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c

@@ -1847,5 +1847,6 @@ int ixgbe_ndo_get_vf_config(struct net_device *netdev,
 	ivi->spoofchk = adapter->vfinfo[vf].spoofchk_enabled;
 	ivi->rss_query_en = adapter->vfinfo[vf].rss_query_enabled;
 	ivi->trusted = adapter->vfinfo[vf].trusted;
+	ivi->linkstate = adapter->vfinfo[vf].link_state;
 	return 0;
 }