SWDEV-301667 - Reset profiler correlation_id_

- The correlation_id had random junk values which we were inserting in
the dispatch AQL packet even when no profiler was attached but if we had
a valid timestamp.
- Also make sure we dont even write the reserved2 field in the AQL
packet if no profiler attached.

Change-Id: Icdb7493198c1bb5e2d786a97e027288660854cd7

rocclr/platform/command.hpp

@@ -126,6 +126,7 @@ class Event : public RuntimeObject {
       submitted_ = 0ULL;
       start_ = 0ULL;
       end_ = 0ULL;
+      correlation_id_ = 0ULL;
      }
   } profilingInfo_;