usb: Apply hardware LPM attributes to 3.1 device

The devices running at SuperSpeedPlus speed are also LPM capable.
Apply usb3 hardware LPM attributes to those devices as well.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>