staging: vt6656: fix module_param_named tx_buffers variable

Should point to vnt_tx_buffers
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/main_usb.c

@@ -79,7 +79,7 @@ MODULE_PARM_DESC(rx_buffers, "Number of receive usb rx buffers");
 
 #define TX_DESC_DEF0 64
 static int vnt_tx_buffers = TX_DESC_DEF0;
-module_param_named(tx_buffers, vnt_rx_buffers, int, 0644);
+module_param_named(tx_buffers, vnt_tx_buffers, int, 0644);
 MODULE_PARM_DESC(tx_buffers, "Number of receive usb tx buffers");
 
 #define RTS_THRESH_DEF     2347