[RFC PATCH] Bluetooth: hci_mediatek: mtk_recv_frame() can be static

[kbuild test robot]

Fixes: 9f2aacacb185 ("Bluetooth: hci_mediatek: Add protocol support for 
MediaTek serial devices")
Signed-off-by: Fengguang Wu <fengguang...@intel.com>
---
 hci_mediatek.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/hci_mediatek.c b/drivers/bluetooth/hci_mediatek.c
index 7ac1e7aa..ab02b8b 100644
--- a/drivers/bluetooth/hci_mediatek.c
+++ b/drivers/bluetooth/hci_mediatek.c
@@ -319,7 +319,7 @@ static int mtk_close(struct hci_uart *hu)
        return 0;
 }
 
-int mtk_recv_frame(struct hci_dev *hdev, struct sk_buff *skb)
+static int mtk_recv_frame(struct hci_dev *hdev, struct sk_buff *skb)
 {
        struct hci_event_hdr *hdr = (void *)skb->data;
        struct hci_uart *hu = hci_get_drvdata(hdev);