Sorry to necro an old thread, but I have managed to get the all the usb ports working on my MXQ Pro 4k s905w . I noticed there was no clock crystal soldered on near the usb hub chip, I happened to have a 12mhz crystal lying around and tried it. Not sure how they were making it work in android, but I have the android dts file if someone smarter than me wants to go through it.
Now I'm just looking for an older image so I can have wifi as well. The older links in this thread seem dead.