kernel: Adapt to moved kvaser_usb.ko in kernel 4.19

In kernel 4.19 the kvaser_usb.ko file moved into its own directory.

Signed-off-by: Hauke Mehrtens <[email protected]>

package/kernel/linux/modules/can.mk

@@ -231,7 +231,9 @@ $(eval $(call KernelPackage,can-usb-esd))
 define KernelPackage/can-usb-kvaser
   TITLE:=Kvaser CAN/USB interface
   KCONFIG:=CONFIG_CAN_KVASER_USB
-  FILES:=$(LINUX_DIR)/drivers/net/can/usb/kvaser_usb.ko
+  FILES:= \
+	$(LINUX_DIR)/drivers/net/can/usb/[email protected] \
+	$(LINUX_DIR)/drivers/net/can/usb/kvaser_usb/[email protected]
   AUTOLOAD:=$(call AutoProbe,kvaser_usb)
   $(call AddDepends/can,+kmod-usb-core)
 endef