ems_usb: Added support for EMS CPC-USB/ARM7 CAN/USB interface

This patch adds support for one channel CAN/USB interace CPC-USB/ARM7 from
EMS Dr. Thomas Wuensche (http://www.ems-wuensche.com).

Signed-off-by: Sebastian Haas <haas@ems-wuensche.com>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/can/Makefile b/drivers/net/can/Makefile
index 523a941..9b035ec 100644
--- a/drivers/net/can/Makefile
+++ b/drivers/net/can/Makefile
@@ -7,6 +7,8 @@
 obj-$(CONFIG_CAN_DEV)		+= can-dev.o
 can-dev-y			:= dev.o
 
+obj-y				+= usb/
+
 obj-$(CONFIG_CAN_SJA1000)	+= sja1000/
 
 ccflags-$(CONFIG_CAN_DEBUG_DEVICES) := -DDEBUG