CalFW: ext. EEPROM R/W Test

[LeilaPiri]

• rPi sends a start signal to the SAM: js>["EEPROMTest"]
• SAM writes defined testdata to EEPROM and reads it back.
• SAM responds: {"EEPROMTest": 0/1} if failed/successful
• Data to write to the EEPROM can be arbitrary but fixed

Definition of Done

• code for mentioned task is complete. examples & documentations are complete.

• build chains are tested

• corresponding branch is closed

• merging is done

[begodev]

merged with #80

[Dmitry Igrishin]

Available in master since c160a1c.