Bluetooth: btintel: Create common Intel Secure Send function

The Intel Secure Send command is used the same in USB and UART drivers
and with that move a generic version into the Intel module.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index c4680cd..ec89e3c 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -75,6 +75,9 @@
 int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 void btintel_hw_error(struct hci_dev *hdev, u8 code);
 
+int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
+			const void *param);
+
 #else
 
 static inline int btintel_check_bdaddr(struct hci_dev *hdev)
@@ -91,4 +94,10 @@
 {
 }
 
+static inline int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type,
+				      u32 plen, const void *param)
+{
+	return -EOPNOTSUPP;
+}
+
 #endif