[libata] trim trailing whitespace

Most of these contributed by that mysterious figger known as A.C.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index dfb3060..3ad0e51 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -459,7 +459,7 @@
 	};
 	if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
 		return -ENOENT;
-		
+
 	pci_read_config_byte(pdev, 0x5B, &scr2);
 	pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
 	/* Cable register now active */
@@ -504,7 +504,7 @@
 
 	if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
 		return -ENOENT;
-		
+
 	/* Do the extra channel work */
 	pci_read_config_word(pdev, 0x52, &mcr3);
 	pci_read_config_word(pdev, 0x56, &mcr6);