Bluetooth: Convert controller hdev->type to hdev->bus

The hdev->type is misnamed and should be actually hdev->bus instead. So
convert it now.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c
index 9f5926a..027cb8b 100644
--- a/drivers/bluetooth/bt3c_cs.c
+++ b/drivers/bluetooth/bt3c_cs.c
@@ -582,7 +582,7 @@
 
 	info->hdev = hdev;
 
-	hdev->type = HCI_PCCARD;
+	hdev->bus = HCI_PCCARD;
 	hdev->driver_data = info;
 	SET_HCIDEV_DEV(hdev, &info->p_dev->dev);