PCU: Tests for the BSS/PCU side NS/BSSGP implementations

The existing (unused) PCU_Tests are operating on top of a NS + BSSGP
emulation, i.e. they're aimed at testing higher protocol layers.  Also,
they required BTS+BSC to run next to the PCU.

The new PCU_Tests_RAW introduced in this patch are the exact opposite:
* they test the PCU alone (attach to PCUIF and Gb interface)
* they don't require BTS or BSC to run
* they don't use NS + BSSGP emulation but raw NS/BSSGP frames to
  test the very NS/BSSGP implementation inside of OsmoPCU.

Change-Id: I7ad76b96974cf0a686ad0f00ccd09d1a9df8b4d5
Related: OS#2890
diff --git a/pcu/gen_links.sh b/pcu/gen_links.sh
index 6e549eb..f9f6dd5 100755
--- a/pcu/gen_links.sh
+++ b/pcu/gen_links.sh
@@ -50,6 +50,7 @@
 FILES+="NS_Emulation.ttcn NS_CodecPort.ttcn NS_CodecPort_CtrlFunct.ttcn NS_CodecPort_CtrlFunctDef.cc "
 FILES+="BSSGP_Emulation.ttcn Osmocom_Gb_Types.ttcn "
 FILES+="LLC_Templates.ttcn L3_Templates.ttcn L3_Common.ttcn "
+FILES+="PCUIF_Types.ttcn PCUIF_CodecPort.ttcn "
 gen_links $DIR $FILES
 
 ignore_pp_results