xhci: Add missing CAS workaround for Intel Sunrise Point xHCI

The workaround for missing CAS bit is also needed for xHC on Intel sunrisepoint PCH. For more details see:

Intel 100/c230 series PCH specification update Doc #332692-006 Errata #8

Signed-off-by Mathias Nyman <[email protected]>

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 drivers/usb/host/xhci-pci.c | 2 ++
 1 file changed, 2 insertions(+)