wireless: Create 'device' symlink in sysfs

Some network interfaces of the wireless drivers lack the 'device'
symlink in sysfs.
This patch lets the drivers create the links.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index fa87c5c..d74c061 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -11584,6 +11584,7 @@
 	priv->prom_net_dev->hard_start_xmit = ipw_prom_hard_start_xmit;
 
 	priv->prom_priv->ieee->iw_mode = IW_MODE_MONITOR;
+	SET_NETDEV_DEV(priv->prom_net_dev, &priv->pci_dev->dev);
 
 	rc = register_netdev(priv->prom_net_dev);
 	if (rc) {