annotate the rest of drivers/net/wan

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
index 3caeb52..519e155 100644
--- a/drivers/net/wan/hdlc_ppp.c
+++ b/drivers/net/wan/hdlc_ppp.c
@@ -42,7 +42,7 @@
 static int ppp_open(struct net_device *dev)
 {
 	hdlc_device *hdlc = dev_to_hdlc(dev);
-	void *old_ioctl;
+	int (*old_ioctl)(struct net_device *, struct ifreq *, int);
 	int result;
 
 	dev->priv = &state(hdlc)->syncppp_ptr;