Sensors: Add WRIST_TILT_GESTURE as wake sensor

Include WRIST_TILT_GESTURE sensor type when determining if
a sensor is a wake sensor or not in getDefaultSensor().

Change-Id: Ib9ae3990e063848163edd34be2ec021ed518e346
diff --git a/libs/gui/SensorManager.cpp b/libs/gui/SensorManager.cpp
index 225bfa8..9fcf9ab 100644
--- a/libs/gui/SensorManager.cpp
+++ b/libs/gui/SensorManager.cpp
@@ -194,7 +194,8 @@
         // a non_wake-up version.
         if (type == SENSOR_TYPE_PROXIMITY || type == SENSOR_TYPE_SIGNIFICANT_MOTION ||
             type == SENSOR_TYPE_TILT_DETECTOR || type == SENSOR_TYPE_WAKE_GESTURE ||
-            type == SENSOR_TYPE_GLANCE_GESTURE || type == SENSOR_TYPE_PICK_UP_GESTURE) {
+            type == SENSOR_TYPE_GLANCE_GESTURE || type == SENSOR_TYPE_PICK_UP_GESTURE ||
+            type == SENSOR_TYPE_WRIST_TILT_GESTURE) {
             wakeUpSensor = true;
         }
         // For now we just return the first sensor of that type we find.