Compact Universal Timing Endpoint based on White Rabbit

A cute-wr is a compact WR-node implementation with minimum components required. The initial design is derived from SPEC, but would work in an opposite manner as a FMC wr-nic, providing 2 DIO channels, external CLK input, EEPROM, JTAG, RS232, and expandable IOs through FMC connector. The gateware and software of cute-wr would also keep maximum compatibility with SPEC. Project is obsolete. See cute-wr-dp for a similar board.