STB通知/按键声音配置

对于非电话设备，config_voice_capable需要设置为false,比如说TV/STB,否则会出现设置通知声音为disable,按键声音也跟着disable了，具体逻辑需进一步研究


frameworks\base\core\res\res\values\config.xml


    <!-- Flag indicating whether the current device is "voice capable".
         If true, this means that the device supports circuit-switched
         (i.e. voice) phone calls over the telephony network, and is
         allowed to display the in-call UI while a cellular voice call is
         active.  This can be overridden to false for "data only" devices
         which can't make voice calls and don't support any in-call UI.


         Note: this flag is subtly different from the
         PackageManager.FEATURE_TELEPHONY system feature, which is
         available on *any* device with a telephony radio, even if the
         device is data-only. -->
    <bool name="config_voice_capable">false</bool>