Licensed under the TAPR Open Hardware License (www.tapr.org/OHL).

These modifications are licensed under the TAPR Open Hardware License:

* Removed LED2, LED3 and LED4.
* Removed the FT232RL UART-to-USB converter.
* Added serial connector (for programming and debugging).
* Added connector for external Ethernet RMII (LAN8720 or DP83848) module. 