sigProcLib: add a CorrType for extended (11-bit) RACH

This is a preparatory change that enables a possibility to choose
the amount of synch. sequences to be used for Access Burst (RACH)
detection. The VTY flag will be introduced in further changes.

There are two correlation types now:

  - RACH (default) - TS0 only;
  - EXT_RACH - all TS0, TS1, and TS2 together.

Change-Id: Ia4f20524350bb8c380d7e10360758eddae8b03e9
Related: OS#3054
diff --git a/Transceiver52M/sigProcLib.h b/Transceiver52M/sigProcLib.h
index 9bc7e10..79a5c3f 100644
--- a/Transceiver52M/sigProcLib.h
+++ b/Transceiver52M/sigProcLib.h
@@ -29,6 +29,7 @@
 enum CorrType{
   OFF,         ///< timeslot is off
   TSC,         ///< timeslot should contain a normal burst
+  EXT_RACH,    ///< timeslot should contain an extended access burst
   RACH,        ///< timeslot should contain an access burst
   EDGE,        ///< timeslot should contain an EDGE burst
   IDLE         ///< timeslot is an idle (or dummy) burst