Change EEPROM functionality for non-AVR systems

[SV-Zanshin]

Currently the library only works for AVR-Based processors because use is made of the EEPROM calls on the Arduino. The EEPROM is used to store information for the INA devices found because this information is static per run and space for program memory can freed up by moving this data to EEPROM.

On non-AVR processors there is generally a lot more memory available, so the EEPROM data space can be reserved once at startup from the heap and read directly.

[SV-Zanshin]

Changes made