net/can: add module alias to can protocol drivers

Add appropriate MODULE_ALIAS() to facilitate autoloading of can protocol drivers

Signed-off-by: Lothar Wassmann <LW@KARO-electronics.de>
Acked-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/can/raw.c b/net/can/raw.c
index 3482546..f4cc445 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -62,6 +62,7 @@
 MODULE_DESCRIPTION("PF_CAN raw protocol");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Urs Thuermann <urs.thuermann@volkswagen.de>");
+MODULE_ALIAS("can-proto-1");
 
 #define MASK_ALL 0