stm32/i2c: Fix bug with I2C4 initialisation.
stm32/i2c: Fix bug with I2C4 initialisation.

tobbad/micropython,ryannathans/micropython,swegener/micropython,adafruit/micropython,adafruit/micropython,infinnovation/micropython,pramasoul/micropython,blazewicz/micropython,selste/micropython,bvernoux/micropython,bvernoux/micropython,trezor/micropython,pramasoul/micropython,pramasoul/micropython,pozetroninc/micropython,ryannathans/micropython,swegener/micropython,dmazzella/micropython,blazewicz/micropython,kerneltask/micropython,bvernoux/micropython,infinnovation/micropython,adafruit/micropython,henriknelson/micropython,pozetroninc/micropython,adafruit/circuitpython,pozetroninc/micropython,swegener/micropython,pfalcon/micropython,blazewicz/micropython,ryannathans/micropython,MrSurly/micropython,selste/micropython,tobbad/micropython,pozetroninc/micropython,MrSurly/micropython,dmazzella/micropython,dmazzella/micropython,selste/micropython,blazewicz/micropython,tralamazza/micropython,tobbad/micropython,MrSurly/micropython,infinnovation/micropython,henriknelson/micropython,kerneltask/micropython,kerneltask/micropython,swegener/micropython,adafruit/circuitpython,tralamazza/micropython,pfalcon/micropython,kerneltask/micropython,pfalcon/micropython,swegener/micropython,selste/micropython,ryannathans/micropython,adafruit/circuitpython,pozetroninc/micropython,infinnovation/micropython,pfalcon/micropython,ryannathans/micropython,henriknelson/micropython,tralamazza/micropython,MrSurly/micropython,selste/micropython,pfalcon/micropython,pramasoul/micropython,adafruit/circuitpython,henriknelson/micropython,trezor/micropython,pramasoul/micropython,infinnovation/micropython,adafruit/circuitpython,blazewicz/micropython,trezor/micropython,trezor/micropython,adafruit/micropython,bvernoux/micropython,MrSurly/micropython,tobbad/micropython,adafruit/micropython,bvernoux/micropython,kerneltask/micropython,tralamazza/micropython,tobbad/micropython,adafruit/circuitpython,dmazzella/micropython,henriknelson/micropython,trezor/micropython