bgpd: add some const to debug api

Add some const to a debug api, make it clear what is and isn't
changed.

Signed-off-by: Mark Stapp <mjs@cisco.com>

Author: Mark Stapp

bgpd/bgp_debug.c

@@ -565,7 +565,7 @@ const char *bgp_notify_admin_message(char *buf, size_t bufsz, uint8_t *data,
 }
 
 /* dump notify packet */
-void bgp_notify_print(struct peer *peer, struct bgp_notify *bgp_notify,
+void bgp_notify_print(const struct peer *peer, const struct bgp_notify *bgp_notify,
 		      const char *direct, bool hard_reset)
 {
 	const char *subcode_str;

bgpd/bgp_debug.h

@@ -168,7 +168,7 @@ extern bool bgp_dump_attr(struct attr *attr, char *buf, size_t size);
 extern bool bgp_debug_peer_updout_enabled(char *host);
 extern const char *bgp_notify_code_str(char code);
 extern const char *bgp_notify_subcode_str(char code, char subcode);
-extern void bgp_notify_print(struct peer *peer, struct bgp_notify *bgp_notify,
+extern void bgp_notify_print(const struct peer *peer, const struct bgp_notify *bgp_notify,
 			     const char *direct, bool hard_reset);
 
 extern const struct message bgp_status_msg[];