Prefix LOG and CHECK with AOS_

This prepares us for introducing glog more widely and transitioning
things over where they make sense.

Change-Id: Ic6c208882407bc2153fe875ffc736d66f5c8ade5
diff --git a/y2016/vision/stereo_geometry.cc b/y2016/vision/stereo_geometry.cc
index b58cb82..a58675c 100644
--- a/y2016/vision/stereo_geometry.cc
+++ b/y2016/vision/stereo_geometry.cc
@@ -10,8 +10,8 @@
       return calibration.calibration();
     }
   }
-  LOG(FATAL, "no calibration for %s found in %s\n", robot_name.c_str(),
-      calibration_file.ShortDebugString().c_str());
+  AOS_LOG(FATAL, "no calibration for %s found in %s\n", robot_name.c_str(),
+          calibration_file.ShortDebugString().c_str());
 }
 
 }  // namespace vision