[libata] DocBook minor updates, fixes

Update copyright year, fix minor stuff 'make xmldocs' complains about.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 3986ec8..b4a0246 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3174,7 +3174,7 @@
 
 /**
  *	ata_sas_port_alloc - Allocate port for a SAS attached SATA device
- *	@pdev: PCI device that the scsi device is attached to
+ *	@host: ATA host container for all SAS ports
  *	@port_info: Information from low-level host driver
  *	@shost: SCSI host that the scsi device is attached to
  *