android: Get search button to show again

Even though it doesn't work...

Change-Id: Ia84da613fd1e5cb3b2c9c5fa3d0458056b9cb728
Reviewed-on: https://gerrit.libreoffice.org/14950Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>

android/experimental/LOAndroid3/res/menu/view_menu.xml

 <?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
     <item android:id="@+id/menu_search"
-          android:icon="@drawable/action_search_light"
-          android:showAsAction="always" />
+          android:icon="@drawable/action_search"
+          app:showAsAction="always" />
+
     <item android:id="@+id/menu_view_toggle"
           android:title="@string/grid_view"/>
     <item android:id="@+id/menu_sort_size"