net: usb: lan78xx: Move display read stat failure to debug mode

If LAN7850 is used in HSIC mode, sometimes, read stats fail without any
impact on data transferred. In this case, the console is filled with error
messages. The patch displays this message for debug purposes only.

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>

Author: cristibirsan

drivers/net/usb/lan78xx.c

@@ -510,7 +510,7 @@ static int lan78xx_read_stats(struct lan78xx_net *dev,
 			dst[i] = src[i];
 		}
 	} else {
-		netdev_warn(dev->net,
+		netdev_dbg(dev->net,
 			    "Failed to read stat ret = %d", ret);
 	}