libata: trim trailing whitespace.
Also, fixup a tabs-to-spaces block of code in ata_piix.
diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h
index d90430b..91b68ee 100644
--- a/drivers/scsi/libata.h
+++ b/drivers/scsi/libata.h
@@ -72,7 +72,7 @@
extern void ata_scsi_badcmd(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *),
u8 asc, u8 ascq);
-extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
+extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
unsigned int (*actor) (struct ata_scsi_args *args,
u8 *rbuf, unsigned int buflen));