esp32/machine_uart: Implement UART.deinit() method.
esp32/machine_uart: Implement UART.deinit() method.

tobbad/micropython,tobbad/micropython,pramasoul/micropython,MrSurly/micropython,pfalcon/micropython,kerneltask/micropython,trezor/micropython,henriknelson/micropython,tobbad/micropython,kerneltask/micropython,pfalcon/micropython,tobbad/micropython,adafruit/circuitpython,bvernoux/micropython,adafruit/circuitpython,pozetroninc/micropython,pozetroninc/micropython,pozetroninc/micropython,pramasoul/micropython,pozetroninc/micropython,kerneltask/micropython,MrSurly/micropython,trezor/micropython,kerneltask/micropython,selste/micropython,adafruit/circuitpython,pozetroninc/micropython,trezor/micropython,MrSurly/micropython,pramasoul/micropython,pramasoul/micropython,selste/micropython,bvernoux/micropython,pfalcon/micropython,bvernoux/micropython,adafruit/circuitpython,adafruit/circuitpython,kerneltask/micropython,henriknelson/micropython,selste/micropython,bvernoux/micropython,henriknelson/micropython,MrSurly/micropython,henriknelson/micropython,trezor/micropython,selste/micropython,MrSurly/micropython,tobbad/micropython,pfalcon/micropython,selste/micropython,pfalcon/micropython,pramasoul/micropython,trezor/micropython,adafruit/circuitpython,bvernoux/micropython,henriknelson/micropython