Borderless reset button for play speed

vlc-android/res/layout/fragment_advanced_options.xml

@@ -56,6 +56,8 @@
                     android:layout_alignParentRight="true"
                     android:layout_centerVertical="true"
                     android:focusable="true"
+                    tools:targetApi="11"
+                    style="?android:attr/borderlessButtonStyle"
                     android:text="1x" />
             </RelativeLayout>