ixgbe: fix X540 phy id to correct value

The existing PHY ID for X540 was from early production hardware and
is no longer correct.  This patch corrects that.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ixgbe/ixgbe_phy.c b/drivers/net/ixgbe/ixgbe_phy.c
index c445fbc..8f7123e 100644
--- a/drivers/net/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ixgbe/ixgbe_phy.c
@@ -115,7 +115,7 @@
 	case TN1010_PHY_ID:
 		phy_type = ixgbe_phy_tn;
 		break;
-	case AQ1202_PHY_ID:
+	case X540_PHY_ID:
 		phy_type = ixgbe_phy_aq;
 		break;
 	case QT2022_PHY_ID: