dm9000: Fix check for disabled wake on LAN

We're trying to check if any options are defined which isn't wha the
existing code does due to confusing & and &&.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/davicom/dm9000.c

@@ -613,7 +613,7 @@ static int dm9000_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
 
 		if (!dm->wake_state)
 			irq_set_irq_wake(dm->irq_wake, 1);
-		else if (dm->wake_state & !opts)
+		else if (dm->wake_state && !opts)
 			irq_set_irq_wake(dm->irq_wake, 0);
 	}