Convert some LOG(DEBUG) messages into more approriate levels

Change-Id: Iace4b1e38e5bb116af78f665dad2bb6cd25c8ec7
diff --git a/compiler/dex/pass_driver.cc b/compiler/dex/pass_driver.cc
index 4f8739a..b60f296 100644
--- a/compiler/dex/pass_driver.cc
+++ b/compiler/dex/pass_driver.cc
@@ -116,7 +116,7 @@
 }
 
 void PassDriver::DispatchPass(CompilationUnit* c_unit, const Pass* curPass) {
-  LOG(DEBUG) << "Dispatching " << curPass->GetName();
+  VLOG(compiler) << "Dispatching " << curPass->GetName();
 
   DataFlowAnalysisMode mode = curPass->GetTraversal();
 
@@ -145,7 +145,7 @@
     case kNoNodes:
       break;
     default:
-      LOG(DEBUG) << "Iterator mode not handled in dispatcher: " << mode;
+      LOG(FATAL) << "Iterator mode not handled in dispatcher: " << mode;
       break;
   }
 }