skeleton: Update setValue() method dbus object '/org/openbmc/sensors/host/OccStatus'

In recent occ_i2c driver, a new hwmon sysfs attribte
'/sys/class/i2c-adapter/i2c-X/X-0050/online' has been used to
instantiate occ_i2c device. Update the 'OccStatus' dbus object
to use the new interface.
Do not use '/sys/class/i2c-adapter/i2c-X/new_device' anymore.

Signed-off-by: Yi Li <adamliyi@msn.com>
diff --git a/bin/sensor_manager2.py b/bin/sensor_manager2.py
index 5964263..ca5c2c8 100755
--- a/bin/sensor_manager2.py
+++ b/bin/sensor_manager2.py
@@ -56,8 +56,12 @@
 	root_sensor.add(obj_path,Sensors.PowerCap(bus,obj_path))
 	obj_path = OBJ_PATH+"/host/BootProgress"
 	root_sensor.add(obj_path,Sensors.BootProgressSensor(bus,obj_path))
+
 	obj_path = OBJ_PATH+"/host/OccStatus"
-	root_sensor.add(obj_path,Sensors.OccStatusSensor(bus,obj_path))
+	sensor_obj = Sensors.OccStatusSensor(bus,obj_path)
+	sensor_obj.sysfs_attr = "/sys/class/i2c-adapter/i2c-3/3-0050/online"
+	root_sensor.add(obj_path,sensor_obj)
+
 	obj_path = OBJ_PATH+"/host/BootCount"
 	root_sensor.add(obj_path,Sensors.BootCountSensor(bus,obj_path))
 	obj_path = OBJ_PATH+"/host/OperatingSystemStatus"