Switched vision over to 1 rx socket with stale checks.

Change-Id: I31d3d874a3ff7e51c02e3c7cc5e70ff4b5b8d5a9
diff --git a/y2016/vision/vision.q b/y2016/vision/vision.q
index ed46874..2d95c3c 100644
--- a/y2016/vision/vision.q
+++ b/y2016/vision/vision.q
@@ -1,6 +1,8 @@
 package y2016.vision;
 
 message VisionStatus {
+  bool left_image_valid;
+  bool right_image_valid;
   // Times when the images were taken as nanoseconds on CLOCK_MONOTONIC on the
   // TK1.
   int64_t left_image_timestamp;