libipsec: Pass separate inbound/update flags to the IPsec SA manager

Similar to other kernel interfaces, the libipsec backends uses the flag for
different purposes, and therefore should get separate flags.

src/libcharon/plugins/kernel_libipsec/kernel_libipsec_ipsec.c

@@ -259,7 +259,8 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
 {
 	return ipsec->sas->add_sa(ipsec->sas, src, dst, spi, protocol, reqid, mark,
 							  tfc, lifetime, enc_alg, enc_key, int_alg, int_key,
-							  mode, ipcomp, cpi, initiator, encap, esn, inbound);
+							  mode, ipcomp, cpi, initiator, encap, esn,
+							  inbound, update);
 }
 
 METHOD(kernel_ipsec_t, update_sa, status_t,