Bluetooth: Add 'sync' specifier to synchronous request APIs

To make it clear which HCI request APIs target specifically
synchronous requests, add 'sync' to the API names.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index aa868f6..ae19bce 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -100,7 +100,7 @@
 	}
 }
 
-void hci_req_cancel(struct hci_dev *hdev, int err)
+void hci_req_sync_cancel(struct hci_dev *hdev, int err)
 {
 	BT_DBG("%s err 0x%2.2x", hdev->name, err);
 
@@ -259,9 +259,9 @@
 		return -ENETDOWN;
 
 	/* Serialize all requests */
-	hci_req_lock(hdev);
+	hci_req_sync_lock(hdev);
 	ret = __hci_req_sync(hdev, req, opt, timeout);
-	hci_req_unlock(hdev);
+	hci_req_sync_unlock(hdev);
 
 	return ret;
 }