QCC30xx 功放使能脚配置

使能PIO3的功放控制引脚后，sink连接的手机主动打电话没有声音（PIO3为低）

按照配置sink需要在adk configure tools中配置pio3的功放引脚：

配置后发现听歌和被call电话声音都没有问题，但是用连接sink耳机的手机主动打电话出去，sink耳机却没有声音，通过判断知道是PIO_AUDIO_ACTIVE即PIO3被拉低导致，可以通过添加判断来解决：

case EventSysCheckAudioAmpDrive:
    /* cancel any pending messages */
    MessageCancelAll( &theSink.task , EventSysCheckAudioAmpDrive);
    /* when the device is no longer routing audio to the speaker then turn off the audio amplifier */
    if((!sinkAudioIsAudioRouted()) && (!sinkAudioIsVoiceRouted())&& (!isSinkInCallMode()))
    {
        MAIN_DEBUG (( "HS : EventSysCheckAudioAmpDrive turn off amp\n" ));
        PioDrivePio(PIO_AUDIO_ACTIVE, FALSE);
    }
    else
        lIndicateEvent = FALSE;
break;

其中isSinkInCallMode（void）为sink_statemanager.c自定义函数：

bool isSinkInCallMode (void)
{
    if ((gTheSinkState == deviceOutgoingCallEstablish ) || 
        (gTheSinkState == deviceIncomingCallEstablish ) || 
        (gTheSinkState == deviceActiveCallSCO ) || 
        (gTheSinkState == deviceActiveCallNoSCO )||
        (gTheSinkState == deviceThreeWayCallWaiting)||
        (gTheSinkState == deviceThreeWayCallOnHold)||
        (gTheSinkState == deviceIncomingCallOnHold)||
        (gTheSinkState == deviceActiveCallSCO))
    {
        return TRUE;
    }else {
        return FALSE;
    }
}

记得在sink_statemanager.h文件中声明。