stm32/adc: Use IS_CHANNEL_INTERNAL macro to check for internal channels.
stm32/adc: Use IS_CHANNEL_INTERNAL macro to check for internal channels.

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