ixgbe: Display EEPROM version in ethtool -i queries

Currently ixgbe does not display the EEPROM version in ethtool -i, where
other drivers do.  The EEPROM version is located at offset 0x29.  This
patch adds support to display it.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index 0ea791a..e98ace8 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -310,6 +310,8 @@
 	struct work_struct watchdog_task;
 	struct work_struct sfp_task;
 	struct timer_list sfp_timer;
+
+	u16 eeprom_version;
 };
 
 enum ixbge_state_t {