Changed "waiting for tsid" message from INFO to DEBUG

Changed the log message about "Received PAT for tsid XX waiting for tsid YY" from INFO to DEBUG.
This is done to avoid polluting the logs when not debugging.
Note that This message is useful for investigating the "Rescan your transports" warning messages
that are sometimes given even when the scanning information is completely up-to-date.

mythtv/libs/libmythtv/recorders/dtvsignalmonitor.cpp

@@ -310,8 +310,9 @@ void DTVSignalMonitor::HandlePAT(const ProgramAssociationTable *pat)
         GetStreamData()->SetVersionPAT(tsid, -1,0);
         // END HACK HACK HACK
 
-        DBG_SM("HandlePAT()", QString("Received PAT for tsid %1 waiting for tsid %2")
-            .arg(tsid).arg(m_transportID));
+        LOG(VB_CHANNEL, LOG_DEBUG, LOC + QString("HandlePAT() ") +
+            QString("Received PAT for tsid %1 waiting for tsid %2")
+                .arg(tsid).arg(m_transportID));
 
         // Only one entry in the PAT, just use this program
         int spts_program = 0;