Bluetooth: Make __hci_update_background_scan private to hci_request.c

There are no more external users so this API can be made private.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

net/bluetooth/hci_request.c

@@ -670,7 +670,7 @@ void hci_update_page_scan(struct hci_dev *hdev)
  *
  * This function requires the caller holds hdev->lock.
  */
-void __hci_update_background_scan(struct hci_request *req)
+static void __hci_update_background_scan(struct hci_request *req)
 {
 	struct hci_dev *hdev = req->hdev;
 

net/bluetooth/hci_request.h

@@ -64,8 +64,6 @@ void __hci_update_page_scan(struct hci_request *req);
 int hci_update_random_address(struct hci_request *req, bool require_privacy,
 			      u8 *own_addr_type);
 
-void __hci_update_background_scan(struct hci_request *req);
-
 int hci_abort_conn(struct hci_conn *conn, u8 reason);
 void __hci_abort_conn(struct hci_request *req, struct hci_conn *conn,
 		      u8 reason);