[E09] adapt to new eeprom lib
Adapt the board file of e09 to new API to read mac address from eeprom introduced in cc0a3644
This fixes the following compilation error that occurs when building for e09:
fatal error: ../common/e2promlib.h: No such file or directory
| 29 | #include "../common/e2promlib.h"
| | ^~~~~~~~~~~~~~~~~~~~~~~
| compilation terminated.
Edited by Alessandro Pecugi