staging: vt6656: move need_ack into into vnt_usb_send_context

Fixing need_ack to u8 and removing from function declarations.
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/device.h

@@ -236,6 +236,7 @@ struct vnt_usb_send_context {
 	u8 type;
 	u8 pkt_no;
 	u8 pkt_type;
+	u8 need_ack;
 	u8 fb_option;
 	bool in_use;
 	unsigned char data[MAX_TOTAL_SIZE_WITH_ALL_HEADERS];