[netdrvr ns83820] fix oops, initialize dev->priv to prevent future slipups like this

drivers/net/ns83820.c

@@ -1215,7 +1215,7 @@ static int ns83820_ethtool_ioctl (struct ns83820 *dev, void *useraddr)
 
 static int ns83820_ioctl(struct net_device *_dev, struct ifreq *rq, int cmd)
 {
-	struct ns83820 *dev = _dev->priv;
+	struct ns83820 *dev = (struct ns83820 *)_dev;
 
 	switch(cmd) {
 	case SIOCETHTOOL:
@@ -1788,6 +1788,7 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_
 	dev->ee.cache = &dev->MEAR_cache;
 	dev->ee.lock = &dev->misc_lock;
 	dev->net_dev.owner = THIS_MODULE;
+	dev->net_dev.priv = dev;
 
 	INIT_WORK(&dev->tq_refill, queue_refill, dev);
 	tasklet_init(&dev->rx_tasklet, rx_action, (unsigned long)dev);