Add string for pickup sensor

Change-Id: I4a9eb85c517d57b79a027a44cd1d752fd9280fc8
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 17cc4b7..60ba0c2 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -85,6 +85,9 @@
     <!-- Tilt sensor -->
     <string name="tilt_sensor_title">Tilt sensor</string>
 
+    <!-- Pickup sensor -->
+    <string name="pickup_sensor_title">Pickup sensor</string>
+
     <!-- Proximity sensor -->
     <string name="proximity_sensor_title">Proximity sensor</string>