A relatively generic description of the current 'conditions'
of this device, specified in a bit-mask.
Usage: It is desirable that the implementor report 'conditions'
of all devices corresponding to conceptual rows in the
'hrDeviceTable' as accurately as feasible. 'Conditions' occur
within or across 'states' in a finite state machine (FSM)
implementation of a device. They represent both short term and
long term conditions.