Merge "Update comment to match new API." into main

     * by the consumer end point, the BufferQueueProducer callback onBufferReleased will call

     * returnBufferForStream() to return the free buffer to this buffer manager. If the stream

     * uses buffer manager to manage the stream buffers, it should disable the BufferQueue

     * allocation via IGraphicBufferProducer::allowAllocation(false).

     * allocation via Surface::allowAllocation(false).

     *

     * Registering an already registered stream has no effect.

     *