Initial version with working 10 GbE output

Added PIN assignments for
mgt_gpio
and
mgt_tx and mgt_rx (31 downto 24)
Initial version with functional 10 GbE output

added "reset10GBE" ouput signal
Initial version with functional 10 GbE output

32 bits words going to the FIFO were re-ordered
Initial version with functional 10 GbE output

major re-write to make it truly functional
Initial version with functional 10 GbE output

 added a bit, "reset10GBE", to reset the 10GbE module
 Added a test pattern generator (it sends UDP packets), it can be enable disabled from the C167 register 0, bit 5
 amended an error on loading  register 12
Initial version with functional 10 GbE output

  added test points for viewing signals on a scope
Initial version with functional 10 GbE output

  Added external port "mgt_gpio"