Adds weak definition for the configuration filename symbol to be used when there is no config eeprom present.
Adds weak definition for the configuration filename symbol to be used when there is no config eeprom present.

bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn