[Bluetooth] Make use of MODULE_FIRMWARE

Some Bluetooth drivers need one or more binary firmware images. Export
these image names via the MODULE_FIRMWARE tag.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
index 27cceb6..4c766f3 100644
--- a/drivers/bluetooth/bfusb.c
+++ b/drivers/bluetooth/bfusb.c
@@ -801,3 +801,4 @@
 MODULE_DESCRIPTION("BlueFRITZ! USB driver ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("bfubase.frm");