Squashed 'panda/' changes from 06958e4..38dc4e6

38dc4e6 Chrysler safety: better to mention messages we don't want to forward
236705f chrysler: forward bus 0 to bus 2 (#177)
62d4219 debug_console.py: exit when no pandas found (#175)

git-subtree-dir: panda
git-subtree-split: 38dc4e678325d13b4324f91f6eff8cb6a0fe575d

old-commit-hash: 27ef9f2236

tests/debug_console.py

@@ -21,6 +21,9 @@ if __name__ == "__main__":
 
   pandas = list(map(lambda x: Panda(x, claim=claim), serials))
 
+  if not len(pandas):
+    sys.exit("no pandas found")
+
   if os.getenv("BAUD") is not None:
     for panda in pandas:
       panda.set_uart_baud(port_number, int(os.getenv("BAUD")))