boardd: keep defined safety models in sync with panda repo (#412)

This is a noop for most users, but for those of us working on new
car ports where we have our own additional defines, having
those defines out of sync creates merge conflicts in one place
(good so we can fix it) but not the other ( not good becasue
they will go unnoticed). I learned this the hardway!.

Signed-off-by: Jafar Al-Gharaibeh <to.jafar@gmail.com>

selfdrive/boardd/boardd.cc

@@ -40,8 +40,11 @@
 #define SAFETY_FORD 5
 #define SAFETY_CADILLAC 6
 #define SAFETY_HYUNDAI 7
+#define SAFETY_TESLA 8
+#define SAFETY_TOYOTA_IPAS 0x1335
 #define SAFETY_TOYOTA_NOLIMITS 0x1336
 #define SAFETY_ALLOUTPUT 0x1337
+#define SAFETY_ELM327 0xE327
 
 namespace {