audit: Make use of str_enabled_disabled() helper

Use str_enabled_disabled() helper instead of open
coding the same.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

kernel/audit.c

@@ -1706,7 +1706,7 @@ static int __init audit_init(void)
 	audit_cmd_mutex.owner = NULL;
 
 	pr_info("initializing netlink subsys (%s)\n",
-		audit_default ? "enabled" : "disabled");
+		str_enabled_disabled(audit_default));
 	register_pernet_subsys(&audit_net_ops);
 
 	audit_initialized = AUDIT_INITIALIZED;