BSSGP_Emulation: add type record LLC_Entities

In prepartion of moving the LLC layer out of the BSSGP

Change-Id: I1a8c6a608c84a984e542510482bbfc5394ae6658
diff --git a/library/BSSGP_Emulation.ttcn b/library/BSSGP_Emulation.ttcn
index a9d2a25..ca97ccd 100644
--- a/library/BSSGP_Emulation.ttcn
+++ b/library/BSSGP_Emulation.ttcn
@@ -116,6 +116,8 @@
 	var ClientEntity ClientTable[16];
 }
 
+type record length(16) of LLC_Entity LLC_Entities;
+
 type record ClientEntity {
 	OCT4 tlli,
 	OCT4 tlli_old optional,