New Feature: Save/Clear/Load board addresses from the EEPROM

     Allows the user to have dedicated addresses for special
     or permanent assemblies which many need to be broken down
     and reassembled from time to time.

     - Save Address using 0x85 (auto starts using this address)
     - Reads address at boot
     - Clear board address using 0x86
     - Clear all boards EEPROMs using 0x87

Signed-off-by: childofthehorn <childofthehorn@gmail.com>