libata: Trim trailing whitespace

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_artop.c b/drivers/ata/pata_artop.c
index 9861059..c60e7a0 100644
--- a/drivers/ata/pata_artop.c
+++ b/drivers/ata/pata_artop.c
@@ -99,7 +99,7 @@
  *
  *	Identify the cable type for the ARTOp interface in question
  */
- 
+
 static int artop6260_cable_detect(struct ata_port *ap)
 {
 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);