Usb fails on certain reboot sequences.

[kareltucek]

In the following scenario, usb connection fails on reboot.

Steps to reproduce:

• reboot PC, enter grub shell (tap escape when in the menu)
• enter reboot
• second time the device gets into grub, uhk does not work, claiming <err> UsbReportSender: Send failed (gave up resending): -115 (Network interface is not configured)

    power=L2-suspend configured=1 active=1
    evt queue free=24 min=22
    last ok transfer: EP 81, 374646 ms ago (72 total)
    no-power reject: total=121 sinceOk=121, last: EP 81 err=1 4999 ms ago
    bus event: vbus-on x1, last 396952 ms ago
    bus event: reset x1, last 396926 ms ago
    bus event: suspend x1, last 396926 ms ago
    bus event: resume x1, last 396925 ms ago
    bus event: set-config x2, last 396739 ms ago
    bus event: suspend x1, last 374205 ms ago

These steps leave usb in L2::SUSPENDED state.

This seems similar to the anomaly 211, but simply applying NRF_USBD_COMMON_USE_WORKAROUND_FOR_ANOMALY_211 doesn't seem to fix it.