[administrative] openfirmware commit messages

[Stefan Reinauer]

Dear OpenFirmware enthusiasts,

we recently created a new mailing list around Firmworks' OpenFirmware
implementation (the one that is used on OLPC for example):

https://www.openfirmware.info/mailman/listinfo/openfirmware

Due to this new mailing list, commit messages to Mitch's OpenFirmware
repository will go to the new mailing list from now on.

Best regards,

Stefan Reinauer