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/y2018/constants.cc b/y2018/constants.cc
index 5fb7161..97a62a1 100644
--- a/y2018/constants.cc
+++ b/y2018/constants.cc
@@ -128,7 +128,7 @@
       break;
 
     default:
-      LOG(FATAL, "unknown team #%" PRIu16 "\n", team);
+      AOS_LOG(FATAL, "unknown team #%" PRIu16 "\n", team);
   }
 
   return r;
@@ -136,7 +136,7 @@
 
 const Values &DoGetValues() {
   const uint16_t team = ::aos::network::GetTeamNumber();
-  LOG(INFO, "creating a Constants for team %" PRIu16 "\n", team);
+  AOS_LOG(INFO, "creating a Constants for team %" PRIu16 "\n", team);
   return GetValuesForTeam(team);
 }