Systemstatus - add support older version of PQWME

Add support of older (shorter) version of PQWME
strings from modem. Systemstatus currently discards
those shorter strings. This change is to fill out
all zeros in those missing fields instead of
discarding the whole sentence.

Change-Id: I0276e595c738253608071f12170232a59e3b2e9e
CRs-Fixed: 2153513

core/SystemStatus.cpp

@@ -158,6 +158,7 @@ private:
         eAgcGlo = 20,
         eAgcBds = 21,
         eAgcGal = 22,
+        eMax0 = eAgcGal,
         eLeapSeconds = 23,
         eLeapSecUnc = 24,
         eGloBpAmpI = 25,
@@ -166,7 +167,6 @@ private:
         eBdsBpAmpQ = 28,
         eGalBpAmpI = 29,
         eGalBpAmpQ = 30,
-        eMax0 = eGalBpAmpQ,
         eTimeUncNs = 31,
         eMax
     };