security: Make lsm_priv union in lsm_audit.h anonymous

Made the lsm_priv union in include/linux/lsm_audit.h
anonymous.

Signed-off-by: Thomas Liu <tliu@redhat.com>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/smack/smack.h b/security/smack/smack.h
index ff180ed..c6e9aca 100644
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -275,7 +275,7 @@
 {
 	memset(a, 0, sizeof(*a));
 	a->a.type = type;
-	a->a.lsm_priv.smack_audit_data.function = func;
+	a->a.smack_audit_data.function = func;
 }
 
 static inline void smk_ad_setfield_u_tsk(struct smk_audit_info *a,