PYNQ 3.0.1 port for old Zybo, Zybo-Z7-10, Zybo-Z7-20

PYNQ 3.0.1 port for all variants of Zybo board

The image is compressed with ZX archive. BalenaEtcher can be used for direct SD flashing without unpacking.

• [Retired Zybo] Fixed volatile ethernet MAC from I2C EEPROM (base bitstream is flashed on boot for I2C connectivity)
• [All boards] Fixed HAVAGE daemon systemd service file (/lib/systemd/system/haveged.service)
• [All boards] Simple Linux Device tree with MIO btns and leds