igb: remove media type fiber as it is misleading

The current igb driver only supports copper and serdes.  The fiber media
type is a holdover from earlier NICs as the current nics supported by igb
all use serdes when communicating over a fiber connection.  As a result we
can remove media type fiber without losing any functionality.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/igb/e1000_hw.h

@@ -61,8 +61,7 @@ enum e1000_mac_type {
 enum e1000_media_type {
 	e1000_media_type_unknown = 0,
 	e1000_media_type_copper = 1,
-	e1000_media_type_fiber = 2,
-	e1000_media_type_internal_serdes = 3,
+	e1000_media_type_internal_serdes = 2,
 	e1000_num_media_types
 };