[NetLabel]: add audit support for configuration changes

This patch adds audit support to NetLabel, including six new audit message
types shown below.

 #define AUDIT_MAC_UNLBL_ACCEPT 1406
 #define AUDIT_MAC_UNLBL_DENY   1407
 #define AUDIT_MAC_CIPSOV4_ADD  1408
 #define AUDIT_MAC_CIPSOV4_DEL  1409
 #define AUDIT_MAC_MAP_ADD      1410
 #define AUDIT_MAC_MAP_DEL      1411

Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/netlabel.h b/include/net/netlabel.h
index 6692430..190bfdb 100644
--- a/include/net/netlabel.h
+++ b/include/net/netlabel.h
@@ -96,7 +96,7 @@
 struct netlbl_dom_map;
 
 /* Domain mapping operations */
-int netlbl_domhsh_remove(const char *domain);
+int netlbl_domhsh_remove(const char *domain, u32 audit_secid);
 
 /* LSM security attributes */
 struct netlbl_lsm_cache {