[SCSI] scsi: t128 scsi_cmnd convertion

Changes the obsolete Scsi_Cmnd to struct scsi_cmnd and remove the trailing
whitespaces.

Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>