net: hsr: get ready for const netdev->dev_addr

hsr_create_self_node() may get netdev->dev_addr
passed as argument, netdev->dev_addr will be
const soon.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/hsr/hsr_framereg.c

@@ -76,8 +76,8 @@ static struct hsr_node *find_node_by_addr_A(struct list_head *node_db,
  * frames from self that's been looped over the HSR ring.
  */
 int hsr_create_self_node(struct hsr_priv *hsr,
-			 unsigned char addr_a[ETH_ALEN],
-			 unsigned char addr_b[ETH_ALEN])
+			 const unsigned char addr_a[ETH_ALEN],
+			 const unsigned char addr_b[ETH_ALEN])
 {
 	struct list_head *self_node_db = &hsr->self_node_db;
 	struct hsr_node *node, *oldnode;

net/hsr/hsr_framereg.h

@@ -48,8 +48,8 @@ int hsr_register_frame_out(struct hsr_port *port, struct hsr_node *node,
 void hsr_prune_nodes(struct timer_list *t);
 
 int hsr_create_self_node(struct hsr_priv *hsr,
-			 unsigned char addr_a[ETH_ALEN],
-			 unsigned char addr_b[ETH_ALEN]);
+			 const unsigned char addr_a[ETH_ALEN],
+			 const unsigned char addr_b[ETH_ALEN]);
 
 void *hsr_get_next_node(struct hsr_priv *hsr, void *_pos,
 			unsigned char addr[ETH_ALEN]);