i40e: Add additional info to PHY type error

stable inclusion
from linux-4.19.201
commit fbb04f7cf9cfaee7d8300c614a06adb813846a74

--------------------------------

commit dc614c46 upstream.

In case of PHY type error occurs, the message was too generic.
Add additional info to PHY type error indicating that it can be
wrong cable connected.

Fixes: 124ed15b ("i40e: Add dual speed module support")
Signed-off-by: NLukasz Cieplicki <lukaszx.cieplicki@intel.com>
Signed-off-by: NMichal Maloszewski <michal.maloszewski@intel.com>
Tested-by: NTony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: NTony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/net/ethernet/intel/i40e/i40e_ethtool.c

@@ -674,7 +674,7 @@ static void i40e_get_settings_link_up(struct i40e_hw *hw,
 	default:
 		/* if we got here and link is up something bad is afoot */
 		netdev_info(netdev,
-			    "WARNING: Link is up but PHY type 0x%x is not recognized.\n",
+			    "WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n",
 			    hw_link_info->phy_type);
 	}