Public bug reported:

[Impact]
USB 2 device may come up as USB 1 if a connection to a USB 1 device is followed 
by another connection to a USB 2 device, the link will come up as USB 1 for the 
USB 2 device.

[Test Case]
Insert 2 USB devices and they shall appear on lsusb with correct address

[Fix]
11644a76 xhci: Add quirk to workaround the errata seen on Cavium Thunder-X2 Soc

[Regression Risk]
It only affect device PCI_VENDOR_ID_CAVIUM:0x9026 and 
PCI_VENDOR_ID_BROADCOM:0x9026.
Low regression to other device.

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Ike Panhc (ikepanhc)
         Status: New


** Tags: apport-collected

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https://bugs.launchpad.net/bugs/1806534

Title:
  Fix USB2 device wrongly detected as USB1

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