eventq: convert all usage of events to use the new API.

For now, there is still a single global event queue, but this is
necessary for making the steps towards a parallelized m5.

src/cpu/o3/commit_impl.hh

@@ -51,7 +51,7 @@
 template <class Impl>
 DefaultCommit<Impl>::TrapEvent::TrapEvent(DefaultCommit<Impl> *_commit,
                                           unsigned _tid)
-    : Event(&mainEventQueue, CPU_Tick_Pri), commit(_commit), tid(_tid)
+    : Event(CPU_Tick_Pri), commit(_commit), tid(_tid)
 {
     this->setFlags(Event::AutoDelete);
 }
@@ -462,7 +462,7 @@ DefaultCommit<Impl>::generateTrapEvent(unsigned tid)
 
     TrapEvent *trap = new TrapEvent(this, tid);
 
-    trap->schedule(curTick + trapLatency);
+    cpu->schedule(trap, curTick + trapLatency);
     trapInFlight[tid] = true;
 }