Add practice bot teensy and camera IDs.

Change-Id: Ib4b5f8974bee9caf6eec534a4a46cd1fe1335172
diff --git a/y2019/vision/constants.h b/y2019/vision/constants.h
index a56e9b3..faa16e1 100644
--- a/y2019/vision/constants.h
+++ b/y2019/vision/constants.h
@@ -81,6 +81,7 @@
 
 // Serial number of the teensy for each robot.
 constexpr uint32_t CodeBotTeensyId() { return 0xffff322e; }
+constexpr uint32_t PracticeBotTeensyId() { return 0xffff3215; }
 
 // Get the IDs of the cameras in each port for a particular teensy board.
 // inlined so that we don't have to deal with including it in the autogenerated
@@ -89,6 +90,8 @@
   switch (processor_id) {
     case CodeBotTeensyId():
       return {{0, 0, 0, 16, 19}};
+    case PracticeBotTeensyId():
+      return {{14, 15, 18, 17, 1}};
     default:
       return {{0, 0, 0, 0, 0}};
   }