GPRS_Components: s/f_ms_rx_imm_ass_pacch/f_ms_rx_pkt_ass_pacch/g

Immediate Assignment is sent on AGCH/PCH, while on PACCH we have
Packet Uplink/Downlink Assignment instead (see 11.2.29, 11.2.7).

Change-Id: I56473ae5dfa565d2c9d26984b14685a4163bf69a
diff --git a/pcu/GPRS_Components.ttcn b/pcu/GPRS_Components.ttcn
index bba2c97..ee2c38f 100644
--- a/pcu/GPRS_Components.ttcn
+++ b/pcu/GPRS_Components.ttcn
@@ -280,14 +280,15 @@
 	}
 }
 
-function f_ms_rx_imm_ass_pacch(inout GprsMS ms, out uint32_t poll_fn, template RlcmacDlBlock t_imm_ass := ?)
+function f_ms_rx_pkt_ass_pacch(inout GprsMS ms, out uint32_t poll_fn,
+			       template RlcmacDlBlock t_pkt_ass := ?)
 runs on MS_BTS_IFACE_CT return RlcmacDlBlock {
 	var RlcmacDlBlock dl_block;
 	var uint32_t dl_fn;
 
 	f_rx_rlcmac_dl_block(dl_block, dl_fn);
-	if (not match(dl_block, t_imm_ass)) {
-		setverdict(fail, "Failed to match Packet Assignment:", t_imm_ass);
+	if (not match(dl_block, t_pkt_ass)) {
+		setverdict(fail, "Failed to match Packet Assignment:", t_pkt_ass);
 		f_shutdown(__BFILE__, __LINE__);
 	}