staging: rtl8723au: Declare validate_recv_*_frame() static

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_recv.c

@@ -1111,9 +1111,7 @@ int sta2ap_data_frame(struct rtw_adapter *adapter,
 	return ret;
 }
 
-int validate_recv_ctrl_frame(struct rtw_adapter *padapter,
-			     struct recv_frame *precv_frame);
-int validate_recv_ctrl_frame(struct rtw_adapter *padapter,
+static int validate_recv_ctrl_frame(struct rtw_adapter *padapter,
 				    struct recv_frame *precv_frame)
 {
 #ifdef CONFIG_8723AU_AP_MODE
@@ -1259,9 +1257,7 @@ int validate_recv_ctrl_frame(struct rtw_adapter *padapter,
 
 struct recv_frame* recvframe_chk_defrag23a(struct rtw_adapter *padapter,
 					struct recv_frame *precv_frame);
-int validate_recv_mgnt_frame(struct rtw_adapter *padapter,
-			     struct recv_frame *precv_frame);
-int validate_recv_mgnt_frame(struct rtw_adapter *padapter,
+static int validate_recv_mgnt_frame(struct rtw_adapter *padapter,
 				    struct recv_frame *precv_frame)
 {
 	struct sta_info *psta;
@@ -1308,9 +1304,7 @@ int validate_recv_mgnt_frame(struct rtw_adapter *padapter,
 	return _SUCCESS;
 }
 
-int validate_recv_data_frame(struct rtw_adapter *adapter,
-			     struct recv_frame *precv_frame);
-int validate_recv_data_frame(struct rtw_adapter *adapter,
+static int validate_recv_data_frame(struct rtw_adapter *adapter,
 				    struct recv_frame *precv_frame)
 {
 	u8 bretry;