library/GSM_RR_Types: make ts_SacchL1Header easier to use

Move parameter 'fpc' at the end and assign false by default, so that
there is not need to pass false.  We never set it to true anyway.

Change-Id: I8a0ef562c2426a637fbb9fe3d50711ee7738d04f
diff --git a/library/GSM_RR_Types.ttcn b/library/GSM_RR_Types.ttcn
index 980020e..335e290 100644
--- a/library/GSM_RR_Types.ttcn
+++ b/library/GSM_RR_Types.ttcn
@@ -198,7 +198,10 @@
 	external function dec_SacchL1Header(in octetstring stream) return SacchL1Header
 		with { extension "prototype(convert) decode(RAW)" };
 
-	template (value) SacchL1Header ts_SacchL1Header(uint5_t ms_power_lvl, boolean fpc, uint8_t actual_ta) := {
+	template (value) SacchL1Header
+	ts_SacchL1Header(uint5_t ms_power_lvl,
+			 uint8_t actual_ta,
+			 boolean fpc := false) := {
 		reserved := 0,
 		fpc := fpc,
 		ms_power_lvl := ms_power_lvl,