Fix make mandocs for ata_piix.c

[Kurt Wall]

"make mandocs" complains when on ata_piix.c because
piix_check_450nx_errata() has undescribed parameters. This patch silences
this warning by adding descriptions for the undescribed parameters.

Signed-off-by: Kurt Wall <kwall@xxxxxxxxxxxxx>

--- ./linux-2.6.16-rc1/drivers/scsi/ata_piix.c.orig	2006-01-30 21:24:16.000000000 -0500
+++ ./linux-2.6.16-rc1/drivers/scsi/ata_piix.c	2006-01-30 22:30:39.000000000 -0500
@@ -624,6 +624,7 @@
 
 /**
  *	piix_check_450nx_errata	-	Check for problem 450NX setup
+ *	@ata_dev: ATA device to check
  *	
  *	Check for the present of 450NX errata #19 and errata #25. If
  *	they are found return an error code so we can turn off DMA
-- 
Finagle's First Law:
	If an experiment works, something has gone wrong.
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