Merge "Audioflinger: adjust wait time for duplicating thread" into main

// caller must hold mutex()

void DuplicatingThread::updateWaitTime_l()

{

    mWaitTimeMs = UINT_MAX;

    // Initialize mWaitTimeMs according to the mixer buffer size.

    mWaitTimeMs = mNormalFrameCount * 2 * 1000 / mSampleRate;

    for (size_t i = 0; i < mOutputTracks.size(); i++) {

        const auto strong = mOutputTracks[i]->thread().promote();

        if (strong != 0) {