staging: unisys: fix CamelCase constant names in controlframework.h

Fix CamelCase names:

SegmentStateRunning => segment_state_running
SegmentStatePaused => segment_state_paused
SegmentStateStandby => segment_state_standby

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>