If I readed datasheet correctly, this eeprom in those devices is not accessible as memory-mapped region. The EEP=xx will generate stub that programmer can (in the future) access via code like:

uint8_t __attribute__((.section=".eeprom")) my_eeprom_variable.

But if linker can't access to the eeprom directly, user must manipulate with data with eep_read() or something like api, and the EEP definition became irrelevant.