esp32: Clean up mpconfigport.h, enable more features.
esp32: Clean up mpconfigport.h, enable more features.

SHA2017-badge/micropython-esp32,Peetz0r/micropython-esp32,micropython/micropython-esp32,micropython/micropython-esp32,Peetz0r/micropython-esp32,SHA2017-badge/micropython-esp32,Peetz0r/micropython-esp32,SHA2017-badge/micropython-esp32,micropython/micropython-esp32,MrSurly/micropython-esp32,MrSurly/micropython-esp32,SHA2017-badge/micropython-esp32,Peetz0r/micropython-esp32,Peetz0r/micropython-esp32,MrSurly/micropython-esp32,SHA2017-badge/micropython-esp32,MrSurly/micropython-esp32,micropython/micropython-esp32,micropython/micropython-esp32,MrSurly/micropython-esp32