Version 1.4.0		Feb. 26, 2013
 * Fixed RX checksum errors issue
 * Fixed RX hungup issue during long time iperf heavy traffic test
 * Support Big-endian systems
 * Fixed the default MTU to 1500
 * Added the ax88179_change_mtu function to support Jumbo Frame
 * Removed linkup variable from the driver private data structure.
 * Added netif_carrier_on function in ax88179_status.
 * Added bsize and ifg driver parameters.
 * Removed AX_Suspend and AX_Resume