sigProcLib: introduce both TS1 and TS2 RACH synch. sequences

According to 3GPP TS 05.02, section 5.2.7, there are three
synch. sequences for Access Bursts:

  - TS0: GSM, GMSK (default),
  - TS1: EGPRS, 8-PSK,
  - TS2: EGPRS, GMSK.

Let's prepare everythyng to be able to detect all TS0-3 synch.
sequences, but keep detection of both TS1 and TS2 disabled
until the corresponding VTY option is introduced.

Change-Id: I838c21db29c54f1924dd478c2b34b46b70aab2cd
Related: OS#3054
diff --git a/Transceiver52M/radioInterface.cpp b/Transceiver52M/radioInterface.cpp
index 0f949d7..6245cfc 100644
--- a/Transceiver52M/radioInterface.cpp
+++ b/Transceiver52M/radioInterface.cpp
@@ -245,7 +245,7 @@
    * Pre-allocate head room for the largest correlation size
    * so we can later avoid a re-allocation and copy
    * */
-  size_t head = GSM::gRACHSynchSequence.size();
+  size_t head = GSM::gRACHSynchSequenceTS0.size();
 
   /*
    * Form receive bursts and pass up to transceiver. Use repeating