Enable computation of the real sunrise/sunset times in Grass.

Change-Id: I6fce63645f204774b9bfde0cee625c71fa78e1a7
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index fdd3052..685ec59 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -21,6 +21,8 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.wallpaper">
 
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+
     <application
         android:label="@string/wallpapers"
         android:icon="@drawable/ic_launcher_wallpaper">