scsi: usb: storage: Complete the SCSI request directly

The USB storage driver can complete its requests directly from a kernel
thread. Use scsi_done_direct() to avoid waking ksoftirqd.

Link: https://lore.kernel.org/r/20220201210954.570896-3-sebastian@breakpoint.cc


Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>