Move i2c0 enable to roles/bootstrap
Move i2c0 enable to roles/bootstrap

The i2c enable needs a reboot to take effect, so move it to bootstrap where we have an existing reboot.

edwinsteele/biblebox-pi,edwinsteele/biblebox-pi,edwinsteele/biblebox-pi,edwinsteele/biblebox-pi,edwinsteele/biblebox-pi,edwinsteele/biblebox-pi