Make Launcher request BIND_APPWIDGET.

See http://b/issue?id=1839074 for more details.
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 4b11343..39fa9a2 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -56,6 +56,7 @@
     <uses-permission android:name="android.permission.SET_WALLPAPER_HINTS" />
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
+    <uses-permission android:name="android.permission.BIND_APPWIDGET" />
     <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />
     <uses-permission android:name="com.android.launcher.permission.WRITE_SETTINGS" />