[libata] Trim trailing whitespace.

No code changes.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 7fea094..2ffcca0 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -521,7 +521,7 @@
 static int ata_resources_present(struct pci_dev *pdev, int port)
 {
 	int i;
-	
+
 	/* Check the PCI resources for this channel are enabled */
 	port = port * 2;
 	for (i = 0; i < 2; i ++) {
@@ -531,7 +531,7 @@
 	}
 	return 1;
 }
-		
+
 /**
  *	ata_pci_init_native_mode - Initialize native-mode driver
  *	@pdev:  pci device to be initialized
@@ -576,7 +576,7 @@
 
 	probe_ent->irq = pdev->irq;
 	probe_ent->irq_flags = IRQF_SHARED;
-	
+
 	/* Discard disabled ports. Some controllers show their
 	   unused channels this way */
 	if (ata_resources_present(pdev, 0) == 0)