staging: hv: storvsc: ignore SET_WINDOW scsi command

Some commands sent by smartd will offline the device.
With this change applied, smartd sill not monitor the device anymore.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>