mt6735 双mic项目，免提模式如何使用副mic通话

[DESCRIPTION]
双MIC项目，部分客户希望在免提模式下使用副mic通话
[SOLUTION]
1，Dual mic项目需要打开对应ProjectConfig.mak文件DUAL_MIC_SUPPORT=yes
2，在speaker 模式下要使用sub mic通话，则还需要修改Audio_Customization_Common.h中宏定义的值#define USE_REFMIC_IN_LOUDSPK (1)
3，在JB2以后的版本，需要同时修改code如下：
In AudioResourceManager::AudioResourceManager()
MMIcDefaultsetting = 0;
In status_t AudioResourceManager::StartInputDevice()
status_t AudioResourceManager::StartInputDevice()
{
ALOGD("+%s(), mUlInputDevice = 0x%x", __FUNCTION__, mUlInputDevice);
if(IsModeIncall() && (mDlOutputDevice &
AUDIO_DEVICE_OUT_SPEAKER)&&USE_REFMIC_IN_LOUDSPK
{
mMicDefaultsetting = USE_REFMIC_IN_LOUDSPK;
}
else
{
mMicDefaultsetting = 0;
}
mAudioAnalogInstance->SetAnalogPinmuxInverse(
mMicInverseSetting^mMicDefaultsetting);

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