ixgbe: Add SR-IOV feature support to X540

Add X540 specific feature support to X540

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ixgbe/ixgbe_mbx.c b/drivers/net/ixgbe/ixgbe_mbx.c
index 027c628..ea82c5a 100644
--- a/drivers/net/ixgbe/ixgbe_mbx.c
+++ b/drivers/net/ixgbe/ixgbe_mbx.c
@@ -321,9 +321,11 @@
 
 	switch (hw->mac.type) {
 	case ixgbe_mac_82599EB:
-	case ixgbe_mac_X540:
 		vflre = IXGBE_READ_REG(hw, IXGBE_VFLRE(reg_offset));
 		break;
+	case ixgbe_mac_X540:
+		vflre = IXGBE_READ_REG(hw, IXGBE_VFLREC(reg_offset));
+		break;
 	default:
 		break;
 	}