igc: Use netdev printing functions for flex filters

All igc filter implementations use netdev_*() printing functions except for
the flex filters. Unify it.
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/igc/igc_main.c

@@ -3385,7 +3385,7 @@ static int igc_flex_filter_select(struct igc_adapter *adapter,
 	u32 fhftsl;
 
 	if (input->index >= MAX_FLEX_FILTER) {
-		dev_err(&adapter->pdev->dev, "Wrong Flex Filter index selected!\n");
+		netdev_err(adapter->netdev, "Wrong Flex Filter index selected!\n");
 		return -EINVAL;
 	}
 
@@ -3420,7 +3420,6 @@ static int igc_flex_filter_select(struct igc_adapter *adapter,
 static int igc_write_flex_filter_ll(struct igc_adapter *adapter,
 				    struct igc_flex_filter *input)
 {
-	struct device *dev = &adapter->pdev->dev;
 	struct igc_hw *hw = &adapter->hw;
 	u8 *data = input->data;
 	u8 *mask = input->mask;
@@ -3434,7 +3433,7 @@ static int igc_write_flex_filter_ll(struct igc_adapter *adapter,
 	 * out early to avoid surprises later.
 	 */
 	if (input->length % 8 != 0) {
-		dev_err(dev, "The length of a flex filter has to be 8 byte aligned!\n");
+		netdev_err(adapter->netdev, "The length of a flex filter has to be 8 byte aligned!\n");
 		return -EINVAL;
 	}
 
@@ -3504,8 +3503,8 @@ static int igc_write_flex_filter_ll(struct igc_adapter *adapter,
 	}
 	wr32(IGC_WUFC, wufc);
 
-	dev_dbg(&adapter->pdev->dev, "Added flex filter %u to HW.\n",
-		input->index);
+	netdev_dbg(adapter->netdev, "Added flex filter %u to HW.\n",
+		   input->index);
 
 	return 0;
 }