OmniGears: fix music control switch value

Change-Id: I452568a9bc2e346b216834c955a7ada5759520e4
diff --git a/res/xml/button_settings.xml b/res/xml/button_settings.xml
index dd112b3..6612baf 100644
--- a/res/xml/button_settings.xml
+++ b/res/xml/button_settings.xml
@@ -44,7 +44,8 @@
             android:key="volume_button_music_control"
             android:title="@string/volume_button_music_control_title"
             android:summary="@string/volume_button_music_control_summary"
-            android:dependency="volume_button_wake"/>
+            android:dependency="volume_button_wake"
+            android:defaultValue="false" />
     </PreferenceCategory>
 
     <PreferenceCategory