test: driver: eeprom: add board support for eeprom test cases
test: driver: eeprom: add board support for eeprom test cases

The STM32L1's EEPROM function has been tested on 96b_wistrio boards.

Signed-off-by: Kwon Tae-young <44cb37ae90d26743cfd2ce90aaf3b040a10317bd@m2i.co.kr>

zephyrproject-rtos/zephyr,nashif/zephyr,Vudentz/zephyr,finikorg/zephyr,Vudentz/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,nashif/zephyr,Vudentz/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,Vudentz/zephyr,galak/zephyr,galak/zephyr,nashif/zephyr,finikorg/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr