it913x USB tuners reset USB device - patch for 3.3.8 vu+ kernel

I have a 9135:9006 ver 1 usb device and was causing a problem like this:

ehci-brcm ehci-brcm.0: force halt; handshake b0480314 00004000 00000000 -> -145

ehci-brcm ehci-brcm.0: HC died; cleaning up

usb 1-2: USB disconnect, device number 3

dvb-usb: error while stopping stream.

Thanks to athoik (see http://openpli.org/forums/topic/22290-new-it913x-drivers-not-working-in-new-kernel-with-et9000/?view=findpost&p=395744) I was able to find and adjust a patch for vu+duo2 3.3.8 kernels (dvb-usb).

The patch can be found here: https://linuxtv.org/patch/15074/

It is for dvb-usb-v2 but it was easy to convert it to dvb-usb.

There are still problems with DVB-T sticks in vu+duo2 with openpli but they are not related to this problem.

It is my first patch, so please comment and if something is not ok I will correct it.

Regards.