netdevice: Fix typo of dev_unicast_add() comment

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index c421a1f..56b4657 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2973,7 +2973,7 @@
 /**
  *	dev_unicast_add		- add a secondary unicast address
  *	@dev: device
- *	@addr: address to delete
+ *	@addr: address to add
  *	@alen: length of @addr
  *
  *	Add a secondary unicast address to the device or increase