ieee1394: mark all hpsb_address_ops instances as const

These are never modified.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/ieee1394/eth1394.c b/drivers/ieee1394/eth1394.c
index 2012869..7ae8bce 100644
--- a/drivers/ieee1394/eth1394.c
+++ b/drivers/ieee1394/eth1394.c
@@ -181,7 +181,7 @@
 static void ether1394_host_reset(struct hpsb_host *host);
 
 /* Function for incoming 1394 packets */
-static struct hpsb_address_ops addr_ops = {
+const static struct hpsb_address_ops addr_ops = {
 	.write =	ether1394_write,
 };