Merge pull request #9234 from kYc0o/move_eeprom_to_periph

cpu/atmega1281/include/cpu_conf.h

cpu/atmega1281/include/periph_cpu.h

cpu/atmega1284p/include/cpu_conf.h

cpu/atmega1284p/include/periph_cpu.h

cpu/atmega2560/include/cpu_conf.h

cpu/atmega2560/include/periph_cpu.h

cpu/atmega256rfr2/include/cpu_conf.h

cpu/atmega256rfr2/include/periph_cpu.h

cpu/atmega328p/include/cpu_conf.h

cpu/atmega328p/include/periph_cpu.h

cpu/atmega_common/Makefile.features

cpu/stm32l0/Makefile.features

cpu/stm32l0/include/cpu_conf.h

cpu/stm32l0/include/periph_cpu.h

cpu/stm32l1/Makefile.features

cpu/stm32l1/include/cpu_conf.h

cpu/stm32l1/include/periph_cpu.h

drivers/include/periph/eeprom.h

drivers/periph_common/eeprom.c