igb: Store the MAC address in the name in the PTP struct.

Change the name of the adapter in the PTP struct to enable easier
correlation between interface and PTP device.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by:  Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/igb/igb_ptp.c

@@ -547,14 +547,15 @@ int igb_ptp_hwtstamp_ioctl(struct net_device *netdev,
 void igb_ptp_init(struct igb_adapter *adapter)
 {
 	struct e1000_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
 
 	switch (hw->mac.type) {
 	case e1000_i210:
 	case e1000_i211:
 	case e1000_i350:
 	case e1000_82580:
+		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
 		adapter->ptp_caps.owner = THIS_MODULE;
-		strcpy(adapter->ptp_caps.name, "igb-82580");
 		adapter->ptp_caps.max_adj = 62499999;
 		adapter->ptp_caps.n_ext_ts = 0;
 		adapter->ptp_caps.pps = 0;
@@ -570,10 +571,9 @@ void igb_ptp_init(struct igb_adapter *adapter)
 		/* Enable the timer functions by clearing bit 31. */
 		wr32(E1000_TSAUXC, 0x0);
 		break;
-
 	case e1000_82576:
+		snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
 		adapter->ptp_caps.owner = THIS_MODULE;
-		strcpy(adapter->ptp_caps.name, "igb-82576");
 		adapter->ptp_caps.max_adj = 1000000000;
 		adapter->ptp_caps.n_ext_ts = 0;
 		adapter->ptp_caps.pps = 0;
@@ -589,7 +589,6 @@ void igb_ptp_init(struct igb_adapter *adapter)
 		/* Dial the nominal frequency. */
 		wr32(E1000_TIMINCA, INCPERIOD_82576 | INCVALUE_82576);
 		break;
-
 	default:
 		adapter->ptp_clock = NULL;
 		return;