scsi: scsi_lib: Add #include <scsi/scsi_transport.h>

This patch avoids that when building with W=1 the compiler complains
that __scsi_init_queue() has not been declared.  See also commit
d48777a6 ("scsi: remove __scsi_alloc_queue").

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>