esp32/machine_uart: Add ability to invert UART pins.
esp32/machine_uart: Add ability to invert UART pins.

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