Updated serialization code and added #if tracing so that make fast

builds

dev/ide_ctrl.cc:
    added #if to remove variables that are optimized out.
dev/tsunami_io.cc:
dev/tsunami_io.hh:
    Updated serialization code

--HG--
extra : convert_revision : b322a3299097cbd05b9b5bb8b0a80e9fa33bdc20

dev/ide_ctrl.cc

@@ -255,7 +255,10 @@ IdeController::cacheAccess(MemReqPtr &req)
 void
 IdeController::ReadConfig(int offset, int size, uint8_t *data)
 {
+
+#if TRACING_ON
     Addr origOffset = offset;
+#endif
 
     if (offset < PCI_DEVICE_SPECIFIC) {
         PciDev::ReadConfig(offset, size, data);