stmhal/adc: Provide more accurate measure of VBAT and VREFINT.
stmhal/adc: Provide more accurate measure of VBAT and VREFINT.

By using factory calibration values.

adafruit/micropython,oopy/micropython,tuc-osg/micropython,ryannathans/micropython,chrisdearman/micropython,pramasoul/micropython,infinnovation/micropython,swegener/micropython,micropython/micropython-esp32,oopy/micropython,MrSurly/micropython-esp32,toolmacher/micropython,tobbad/micropython,cwyark/micropython,ryannathans/micropython,deshipu/micropython,PappaPeppar/micropython,pfalcon/micropython,blazewicz/micropython,PappaPeppar/micropython,adafruit/circuitpython,MrSurly/micropython,cwyark/micropython,ryannathans/micropython,torwag/micropython,micropython/micropython-esp32,alex-robbins/micropython,tobbad/micropython,bvernoux/micropython,dmazzella/micropython,mhoffma/micropython,tuc-osg/micropython,tobbad/micropython,infinnovation/micropython,chrisdearman/micropython,deshipu/micropython,puuu/micropython,puuu/micropython,Peetz0r/micropython-esp32,PappaPeppar/micropython,trezor/micropython,SHA2017-badge/micropython-esp32,pramasoul/micropython,infinnovation/micropython,infinnovation/micropython,adafruit/circuitpython,deshipu/micropython,dmazzella/micropython,TDAbboud/micropython,tuc-osg/micropython,SHA2017-badge/micropython-esp32,pfalcon/micropython,pozetroninc/micropython,dmazzella/micropython,selste/micropython,alex-robbins/micropython,HenrikSolver/micropython,trezor/micropython,adafruit/circuitpython,MrSurly/micropython,MrSurly/micropython-esp32,selste/micropython,AriZuu/micropython,adafruit/micropython,HenrikSolver/micropython,MrSurly/micropython,AriZuu/micropython,blazewicz/micropython,oopy/micropython,lowRISC/micropython,AriZuu/micropython,Peetz0r/micropython-esp32,TDAbboud/micropython,tralamazza/micropython,pramasoul/micropython,mhoffma/micropython,PappaPeppar/micropython,MrSurly/micropython,blazewicz/micropython,adafruit/circuitpython,mhoffma/micropython,kerneltask/micropython,tuc-osg/micropython,trezor/micropython,bvernoux/micropython,torwag/micropython,HenrikSolver/micropython,toolmacher/micropython,adafruit/circuitpython,Peetz0r/micropython-esp32,chrisdearman/micropython,AriZuu/micropython,tobbad/micropython,oopy/micropython,SHA2017-badge/micropython-esp32,pramasoul/micropython,bvernoux/micropython,MrSurly/micropython-esp32,micropython/micropython-esp32,hiway/micropython,Peetz0r/micropython-esp32,toolmacher/micropython,adafruit/micropython,hiway/micropython,lowRISC/micropython,henriknelson/micropython,alex-robbins/micropython,tobbad/micropython,Timmenem/micropython,tralamazza/micropython,lowRISC/micropython,ryannathans/micropython,PappaPeppar/micropython,swegener/micropython,SHA2017-badge/micropython-esp32,Peetz0r/micropython-esp32,tralamazza/micropython,kerneltask/micropython,puuu/micropython,TDAbboud/micropython,chrisdearman/micropython,pfalcon/micropython,blazewicz/micropython,cwyark/micropython,alex-robbins/micropython,deshipu/micropython,lowRISC/micropython,mhoffma/micropython,lowRISC/micropython,deshipu/micropython,infinnovation/micropython,puuu/micropython,Timmenem/micropython,Timmenem/micropython,puuu/micropython,adafruit/micropython,torwag/micropython,cwyark/micropython,swegener/micropython,hiway/micropython,pramasoul/micropython,pozetroninc/micropython,pfalcon/micropython,selste/micropython,trezor/micropython,henriknelson/micropython,Timmenem/micropython,MrSurly/micropython-esp32,selste/micropython,MrSurly/micropython-esp32,ryannathans/micropython,hiway/micropython,torwag/micropython,AriZuu/micropython,blazewicz/micropython,pozetroninc/micropython,micropython/micropython-esp32,HenrikSolver/micropython,kerneltask/micropython,henriknelson/micropython,torwag/micropython,cwyark/micropython,MrSurly/micropython,Timmenem/micropython,swegener/micropython,toolmacher/micropython,tuc-osg/micropython,hiway/micropython,alex-robbins/micropython,SHA2017-badge/micropython-esp32,chrisdearman/micropython,pozetroninc/micropython,pozetroninc/micropython,swegener/micropython,selste/micropython,bvernoux/micropython,TDAbboud/micropython,mhoffma/micropython,henriknelson/micropython,micropython/micropython-esp32,oopy/micropython,toolmacher/micropython,trezor/micropython,TDAbboud/micropython,kerneltask/micropython,adafruit/circuitpython,adafruit/micropython,kerneltask/micropython,bvernoux/micropython,tralamazza/micropython,HenrikSolver/micropython,dmazzella/micropython,henriknelson/micropython,pfalcon/micropython