USB2 guest fixes - tested on Catalina, spice, Intel

[jpmorrison]

• fixes for usb/redirection for USB2 guests, uhci is needed for low speed devices.
• I've tested with Catalina. I'm not sure if any other guests have USB3 problems
• Mouse workaround for spice remote viewer/macos
• AuthenticIntel looks like a typo - if not then old Intels show GenuineIntel

[flexiondotorg]

Thanks for this, I've got a commit that is inspired by this which should address all these issues 👍

[jpmorrison]

"full" speed USB devices aren't redirecting from Spice - not finding the ohci device I think.

Spice redirection does work with the full intel-ich9-echci/uhci

However usb-ehci might be better for Facetime + Spice redirected USB UVC laptop cam. I was able to get clear but laggy video with Facetime+Catalina (lag might be crappy wifi and my ancient hardware).

Note that Spice supports a separate channel for video streams/codecs so this is more of a guest video driver optimisation issue.

For example these redirect from spice client.

• redirected usb audio works pretty well

• redirected bluetooth is recognised by OSX and you can pair a device. Reliability issues though - again could be my environment

    |__ Port 3: Dev 4, If 0, Class=Audio, Driver=snd-usb-audio, 12M
        ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controller
    |__ Port 3: Dev 4, If 1, Class=Audio, Driver=snd-usb-audio, 12M
        ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controller
    |__ Port 3: Dev 4, If 2, Class=Audio, Driver=snd-usb-audio, 12M
        ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controller
    |__ Port 3: Dev 4, If 3, Class=Human Interface Device, Driver=usbhid, 12M
        ID 0d8c:013c C-Media Electronics, Inc. CM108 Audio Controller
    |__ Port 1: Dev 37, If 0, Class=Wireless, Driver=btusb, 12M
        ID 04ca:3005 Lite-On Technology Corp. Atheros Bluetooth
    |__ Port 1: Dev 37, If 1, Class=Wireless, Driver=btusb, 12M
        ID 04ca:3005 Lite-On Technology Corp. Atheros Bluetooth