Fix for airflow sensor interface path

Corrected the airflow sensor dbus interface path to airflow from cfm.
Reference of airflow interface description
https://github.com/openbmc/phosphor-dbus-interfaces/blob/master/yaml/xyz
/openbmc_project/Sensor/Value.interface.yaml

Tested:
 ipmitool sdr elist - shows the System Airflow sensor
 busctl tree  xyz.openbmc_project.ExitAirTempSensor
 busctl introspect  xyz.openbmc_project.ExitAirTempSensor
                  /xyz/openbmc_project/sensors/airflow/System_Airflow

Signed-off-by: Basheer Ahmed Muddebihal <basheerx.muddebihal@intel.com>
Change-Id: I8d596d388374b4f8cc1354d05e795781093d076c
diff --git a/src/ExitAirTempSensor.cpp b/src/ExitAirTempSensor.cpp
index 8ea42ff..70b9e7a 100644
--- a/src/ExitAirTempSensor.cpp
+++ b/src/ExitAirTempSensor.cpp
@@ -169,25 +169,25 @@
     std::enable_shared_from_this<CFMSensor>(), parent(parent),
     objServer(objectServer)
 {
-    sensorInterface =
-        objectServer.add_interface("/xyz/openbmc_project/sensors/cfm/" + name,
-                                   "xyz.openbmc_project.Sensor.Value");
+    sensorInterface = objectServer.add_interface(
+        "/xyz/openbmc_project/sensors/airflow/" + name,
+        "xyz.openbmc_project.Sensor.Value");
 
     if (thresholds::hasWarningInterface(thresholds))
     {
         thresholdInterfaceWarning = objectServer.add_interface(
-            "/xyz/openbmc_project/sensors/cfm/" + name,
+            "/xyz/openbmc_project/sensors/airflow/" + name,
             "xyz.openbmc_project.Sensor.Threshold.Warning");
     }
     if (thresholds::hasCriticalInterface(thresholds))
     {
         thresholdInterfaceCritical = objectServer.add_interface(
-            "/xyz/openbmc_project/sensors/cfm/" + name,
+            "/xyz/openbmc_project/sensors/airflow/" + name,
             "xyz.openbmc_project.Sensor.Threshold.Critical");
     }
 
     association = objectServer.add_interface(
-        "/xyz/openbmc_project/sensors/cfm/" + name, association::interface);
+        "/xyz/openbmc_project/sensors/airflow/" + name, association::interface);
 
     setInitialProperties(conn, sensor_paths::unitCFM);