Stats updates.

dev/ide_disk.cc:
dev/ide_disk.hh:
    Add in stats.
sim/stat_control.cc:
sim/stat_control.hh:
    Allow setup event to be called with a specific queue.

--HG--
extra : convert_revision : 9310b132b70f967a198cb2e646433f3a5332671e

dev/ide_disk.hh

@@ -244,6 +244,10 @@ class IdeDisk : public SimObject
     Stats::Scalar<> dmaWriteFullPages;
     Stats::Scalar<> dmaWriteBytes;
     Stats::Scalar<> dmaWriteTxs;
+    Stats::Formula rdBandwidth;
+    Stats::Formula wrBandwidth;
+    Stats::Formula totBandwidth;
+    Stats::Formula totBytes;
 
   public:
     /**