net: ethernet: 8390: axnet_cs: Document unused parameter 'txqueue'

Fixes the following W=1 kernel build warning(s):

 drivers/net/ethernet/8390/axnet_cs.c:907: warning: Function parameter or member 'txqueue' not described in 'axnet_tx_timeout'

Cc: "David S. Miller" <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Martin Habets <[email protected]>
Cc: Shannon Nelson <[email protected]>
Cc: "Michael S. Tsirkin" <[email protected]>
Cc: William Lee <[email protected]>
Cc: "A. Hinds --" <[email protected]>
Cc: reached at <[email protected]>
Cc: [email protected]
Signed-off-by: Lee Jones <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Lee Jones

drivers/net/ethernet/8390/axnet_cs.c

@@ -898,6 +898,7 @@ static int ax_close(struct net_device *dev)
 /**
  * axnet_tx_timeout - handle transmit time out condition
  * @dev: network device which has apparently fallen asleep
+ * @txqueue: unused
  *
  * Called by kernel when device never acknowledges a transmit has
  * completed (or failed) - i.e. never posted a Tx related interrupt.