Fix 2147749: Make Settings.ACTION_SOUND_SETTINGS work

Added the official action to the Settings manifest.
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 0af6866..6ddd679 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -225,6 +225,7 @@
                 <action android:name="com.android.settings.SOUND_SETTINGS" />
                 <action android:name="com.android.settings.DISPLAY_SETTINGS" />
                 <action android:name="android.settings.DISPLAY_SETTINGS" />
+                <action android:name="android.settings.SOUND_SETTINGS" />
                 <category android:name="android.intent.category.DEFAULT" />
                 <category android:name="android.intent.category.VOICE_LAUNCH" />
                 <category android:name="com.android.settings.SHORTCUT" />