Staging: hv: blk dev depends on SCSI

hv block driver uses scsi_*() interfaces so it should depend on SCSI.

ERROR: "scsi_normalize_sense" [drivers/staging/hv/hv_blkvsc.ko] undefined!
ERROR: "scsi_print_sense_hdr" [drivers/staging/hv/hv_blkvsc.ko] undefined!

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>