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/y2012/joystick_reader.cc b/y2012/joystick_reader.cc
index 8f35b92..460d850 100644
--- a/y2012/joystick_reader.cc
+++ b/y2012/joystick_reader.cc
@@ -113,7 +113,7 @@
     drivetrain_message->quickturn = data.IsPressed(kQuickTurn);
 
     if (!drivetrain_message.Send()) {
-      LOG(WARNING, "sending stick values failed\n");
+      AOS_LOG(WARNING, "sending stick values failed\n");
     }
   }
 
@@ -125,7 +125,7 @@
     accessories_message->sticks[0] = data.GetAxis(kAdjustClawGoal);
     accessories_message->sticks[1] = data.GetAxis(kAdjustClawSeparation);
     if (!accessories_message.Send()) {
-      LOG(WARNING, "sending accessories goal failed\n");
+      AOS_LOG(WARNING, "sending accessories goal failed\n");
     }
   }