Fix overlay seek circle positions on RTL devices

Fixes #1578 problem number 7

application/vlc-android/res/layout/player_overlay_seek.xml

@@ -3,6 +3,7 @@
         xmlns:app="http://schemas.android.com/apk/res-auto"
         xmlns:tools="http://schemas.android.com/tools"
         android:id="@+id/seekContainer"
+        android:layoutDirection="ltr"
         android:layout_width="match_parent"
         android:layout_height="match_parent">