stmhal: Fix clock configuration for STM32L476-discovery; also add I2C2.
stmhal: Fix clock configuration for STM32L476-discovery; also add I2C2.

turbinenreiter/micropython,henriknelson/micropython,hosaka/micropython,blazewicz/micropython,pramasoul/micropython,lowRISC/micropython,trezor/micropython,HenrikSolver/micropython,torwag/micropython,matthewelse/micropython,micropython/micropython-esp32,MrSurly/micropython-esp32,alex-robbins/micropython,cwyark/micropython,alex-march/micropython,emfcamp/micropython,kerneltask/micropython,tobbad/micropython,alex-march/micropython,Peetz0r/micropython-esp32,swegener/micropython,jmarcelino/pycom-micropython,alex-march/micropython,MrSurly/micropython,adafruit/micropython,dxxb/micropython,Timmenem/micropython,hiway/micropython,henriknelson/micropython,HenrikSolver/micropython,dxxb/micropython,pfalcon/micropython,bvernoux/micropython,swegener/micropython,misterdanb/micropython,puuu/micropython,PappaPeppar/micropython,pramasoul/micropython,kerneltask/micropython,pfalcon/micropython,matthewelse/micropython,adafruit/circuitpython,turbinenreiter/micropython,pozetroninc/micropython,tuc-osg/micropython,bvernoux/micropython,toolmacher/micropython,MrSurly/micropython-esp32,puuu/micropython,chrisdearman/micropython,tuc-osg/micropython,trezor/micropython,kerneltask/micropython,Peetz0r/micropython-esp32,HenrikSolver/micropython,redbear/micropython,HenrikSolver/micropython,puuu/micropython,kerneltask/micropython,infinnovation/micropython,adafruit/micropython,PappaPeppar/micropython,dmazzella/micropython,ganshun666/micropython,hiway/micropython,ryannathans/micropython,lowRISC/micropython,redbear/micropython,micropython/micropython-esp32,lowRISC/micropython,pozetroninc/micropython,TDAbboud/micropython,oopy/micropython,swegener/micropython,blazewicz/micropython,matthewelse/micropython,hosaka/micropython,mhoffma/micropython,deshipu/micropython,turbinenreiter/micropython,deshipu/micropython,tuc-osg/micropython,adafruit/micropython,mpalomer/micropython,oopy/micropython,dmazzella/micropython,lowRISC/micropython,blazewicz/micropython,mpalomer/micropython,pramasoul/micropython,puuu/micropython,tobbad/micropython,toolmacher/micropython,tralamazza/micropython,SHA2017-badge/micropython-esp32,chrisdearman/micropython,tobbad/micropython,tralamazza/micropython,ryannathans/micropython,TDAbboud/micropython,praemdonck/micropython,cwyark/micropython,swegener/micropython,pozetroninc/micropython,Timmenem/micropython,redbear/micropython,drrk/micropython,TDAbboud/micropython,swegener/micropython,oopy/micropython,adafruit/circuitpython,selste/micropython,alex-march/micropython,drrk/micropython,henriknelson/micropython,trezor/micropython,pramasoul/micropython,alex-robbins/micropython,matthewelse/micropython,misterdanb/micropython,alex-robbins/micropython,cwyark/micropython,deshipu/micropython,toolmacher/micropython,hiway/micropython,oopy/micropython,Peetz0r/micropython-esp32,AriZuu/micropython,SHA2017-badge/micropython-esp32,kerneltask/micropython,hosaka/micropython,praemdonck/micropython,SHA2017-badge/micropython-esp32,chrisdearman/micropython,adafruit/circuitpython,mhoffma/micropython,selste/micropython,PappaPeppar/micropython,cwyark/micropython,micropython/micropython-esp32,dinau/micropython,pozetroninc/micropython,PappaPeppar/micropython,drrk/micropython,pfalcon/micropython,misterdanb/micropython,mhoffma/micropython,jmarcelino/pycom-micropython,MrSurly/micropython,SHA2017-badge/micropython-esp32,henriknelson/micropython,alex-robbins/micropython,pramasoul/micropython,praemdonck/micropython,selste/micropython,trezor/micropython,hosaka/micropython,Timmenem/micropython,HenrikSolver/micropython,toolmacher/micropython,Peetz0r/micropython-esp32,blazewicz/micropython,AriZuu/micropython,MrSurly/micropython-esp32,ganshun666/micropython,pfalcon/micropython,MrSurly/micropython-esp32,jmarcelino/pycom-micropython,drrk/micropython,infinnovation/micropython,AriZuu/micropython,MrSurly/micropython,dinau/micropython,tuc-osg/micropython,mpalomer/micropython,micropython/micropython-esp32,emfcamp/micropython,adafruit/circuitpython,Peetz0r/micropython-esp32,dmazzella/micropython,dxxb/micropython,ganshun666/micropython,dinau/micropython,bvernoux/micropython,infinnovation/micropython,infinnovation/micropython,puuu/micropython,trezor/micropython,pozetroninc/micropython,bvernoux/micropython,MrSurly/micropython,dxxb/micropython,alex-march/micropython,lowRISC/micropython,chrisdearman/micropython,adafruit/circuitpython,emfcamp/micropython,ryannathans/micropython,praemdonck/micropython,MrSurly/micropython-esp32,hosaka/micropython,ganshun666/micropython,mpalomer/micropython,PappaPeppar/micropython,ryannathans/micropython,misterdanb/micropython,infinnovation/micropython,pfalcon/micropython,alex-robbins/micropython,deshipu/micropython,turbinenreiter/micropython,Timmenem/micropython,torwag/micropython,dinau/micropython,selste/micropython,deshipu/micropython,selste/micropython,redbear/micropython,SHA2017-badge/micropython-esp32,ganshun666/micropython,toolmacher/micropython,turbinenreiter/micropython,MrSurly/micropython,adafruit/micropython,adafruit/circuitpython,dinau/micropython,ryannathans/micropython,henriknelson/micropython,TDAbboud/micropython,matthewelse/micropython,mhoffma/micropython,drrk/micropython,torwag/micropython,bvernoux/micropython,torwag/micropython,adafruit/micropython,dmazzella/micropython,mhoffma/micropython,micropython/micropython-esp32,tobbad/micropython,jmarcelino/pycom-micropython,redbear/micropython,dxxb/micropython,tralamazza/micropython,misterdanb/micropython,jmarcelino/pycom-micropython,tralamazza/micropython,emfcamp/micropython,hiway/micropython,mpalomer/micropython,blazewicz/micropython,Timmenem/micropython,tobbad/micropython,chrisdearman/micropython,AriZuu/micropython,praemdonck/micropython,torwag/micropython,emfcamp/micropython,hiway/micropython,tuc-osg/micropython,oopy/micropython,cwyark/micropython,TDAbboud/micropython,matthewelse/micropython,AriZuu/micropython