mv643xx_eth: count handling a link event as one unit of napi work

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 352c772..92a867c 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -2178,6 +2178,7 @@
 		if (mp->work_link) {
 			mp->work_link = 0;
 			handle_link_event(mp);
+			work_done++;
 			continue;
 		}