audit: Make use of str_enabled_disabled() helper

JIRA: https://issues.redhat.com/browse/RHEL-78967

This patch is a backport of the following upstream commit:
commit 8c1867a
Author: Hongbo Li <lihongbo22@huawei.com>
Date:   Sat Aug 31 17:52:51 2024 +0800

    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>

Signed-off-by: Ricardo Robaina <rrobaina@redhat.com>

Author: rprobaina

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;