net: ena: fix wrong max Tx/Rx queues on ethtool

ethtool ena_get_channels() expose the max number of queues as the max
number of queues ENA supports (128 queues) and not the actual number
of created queues.
Signed-off-by: NNetanel Belgazal <netanel@amazon.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/amazon/ena/ena_ethtool.c

@@ -742,8 +742,8 @@ static void ena_get_channels(struct net_device *netdev,
 {
 	struct ena_adapter *adapter = netdev_priv(netdev);
 
-	channels->max_rx = ENA_MAX_NUM_IO_QUEUES;
-	channels->max_tx = ENA_MAX_NUM_IO_QUEUES;
+	channels->max_rx = adapter->num_queues;
+	channels->max_tx = adapter->num_queues;
 	channels->max_other = 0;
 	channels->max_combined = 0;
 	channels->rx_count = adapter->num_queues;