esp32/machine_pwm: Support higher PWM freq by auto-scaling timer res.
esp32/machine_pwm: Support higher PWM freq by auto-scaling timer res.

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