edbg.inc.mk: do not erase the whole rom before flashing
edbg.inc.mk: do not erase the whole rom before flashing

This mimics openocd behaviour that only erase needed sectors of the rom.

mfrey/RIOT,A-Paul/RIOT,yogo1212/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,basilfx/RIOT,aeneby/RIOT,BytesGalore/RIOT,smlng/RIOT,biboc/RIOT,miri64/RIOT,aeneby/RIOT,kaspar030/RIOT,OlegHahm/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,biboc/RIOT,yogo1212/RIOT,jasonatran/RIOT,OTAkeys/RIOT,kbumsik/RIOT,authmillenon/RIOT,miri64/RIOT,cladmi/RIOT,authmillenon/RIOT,aeneby/RIOT,mfrey/RIOT,yogo1212/RIOT,mtausig/RIOT,cladmi/RIOT,biboc/RIOT,kYc0o/RIOT,smlng/RIOT,x3ro/RIOT,A-Paul/RIOT,BytesGalore/RIOT,biboc/RIOT,BytesGalore/RIOT,josephnoir/RIOT,miri64/RIOT,kaspar030/RIOT,mfrey/RIOT,lazytech-org/RIOT,A-Paul/RIOT,BytesGalore/RIOT,ant9000/RIOT,kbumsik/RIOT,OlegHahm/RIOT,lazytech-org/RIOT,avmelnikoff/RIOT,toonst/RIOT,smlng/RIOT,x3ro/RIOT,josephnoir/RIOT,OlegHahm/RIOT,avmelnikoff/RIOT,avmelnikoff/RIOT,josephnoir/RIOT,avmelnikoff/RIOT,mtausig/RIOT,kaspar030/RIOT,authmillenon/RIOT,kbumsik/RIOT,kYc0o/RIOT,A-Paul/RIOT,authmillenon/RIOT,mtausig/RIOT,smlng/RIOT,kYc0o/RIOT,authmillenon/RIOT,gebart/RIOT,ant9000/RIOT,kbumsik/RIOT,basilfx/RIOT,RIOT-OS/RIOT,smlng/RIOT,gebart/RIOT,ant9000/RIOT,toonst/RIOT,biboc/RIOT,rfuentess/RIOT,A-Paul/RIOT,BytesGalore/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,mtausig/RIOT,miri64/RIOT,rfuentess/RIOT,kaspar030/RIOT,mfrey/RIOT,mtausig/RIOT,basilfx/RIOT,toonst/RIOT,OTAkeys/RIOT,lazytech-org/RIOT,lazytech-org/RIOT,yogo1212/RIOT,josephnoir/RIOT,x3ro/RIOT,aeneby/RIOT,OTAkeys/RIOT,lazytech-org/RIOT,cladmi/RIOT,basilfx/RIOT,avmelnikoff/RIOT,ant9000/RIOT,gebart/RIOT,rfuentess/RIOT,kbumsik/RIOT,toonst/RIOT,gebart/RIOT,OlegHahm/RIOT,aeneby/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,ant9000/RIOT,miri64/RIOT,josephnoir/RIOT,authmillenon/RIOT,mfrey/RIOT,rfuentess/RIOT,cladmi/RIOT,yogo1212/RIOT,toonst/RIOT,gebart/RIOT,basilfx/RIOT,kaspar030/RIOT,yogo1212/RIOT,jasonatran/RIOT,jasonatran/RIOT,x3ro/RIOT,x3ro/RIOT,cladmi/RIOT,jasonatran/RIOT,rfuentess/RIOT