Add axi-ethernet support for vivado 2013.3

Signed-off-by: Jason Wu <j.wu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Remove GPL license from generated files

GPL license is causing problems for non GPL projects
which customers want to use.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Add mig7 memory controller

Signed-off-by: Michal Simek <michal.simek@xilinx.com>