Make compiler stat dumping easier to use.

Previous needed -verbose:compiler + a debug build. Now specify --dump-stats to
dex2oat.

Change-Id: Ifde379e7cd06bbb0fe20149ce89c3b3789221eac
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 056be1f..7c4a6ce 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -64,7 +64,7 @@
   if (x == 0 && y == 0) {
     return;
   }
-  VLOG(compiler) << Percentage(x, y) << "% of " << str << " for " << (x + y) << " cases";
+  LOG(INFO) << Percentage(x, y) << "% of " << str << " for " << (x + y) << " cases";
 }
 
 class AOTCompilationStats {