AndroidManifest: re-enable installLocation

Tested on 2.1, 2.2, 4.0

Close #7066

vlc-android/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.videolan.vlc"
+    android:installLocation="auto"
     android:versionCode="2"
     android:versionName="0.0.2" >