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/airo.c b/drivers/net/wireless/airo.c
index efb7444..4e1c690 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -2668,6 +2668,7 @@
 	dev->irq = ethdev->irq;
 	dev->base_addr = ethdev->base_addr;
 	dev->wireless_data = ethdev->wireless_data;
+	SET_NETDEV_DEV(dev, ethdev->dev.parent);
 	memcpy(dev->dev_addr, ethdev->dev_addr, dev->addr_len);
 	err = register_netdev(dev);
 	if (err<0) {