extend the sensors framework to allow it to report the state of the sensor, not just its value.
extend the sensors framework to allow it to report the state of the
sensor, not just its value.

ok henning@ marco@ deraadt@ beck@ fixes and tweaks grange@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars