esp8266: Put more code in iROM section.
esp8266: Put more code in iROM section.

Also explicitly name the py/*.o files in the linker file, to enable easy
testing of putting certain ones in iRAM.

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