[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_sis.c b/drivers/ata/pata_sis.c
index 916cedb3..c434c4e 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -847,7 +847,7 @@
 	struct sis_chipset *chipset = NULL;
 
 	static struct sis_chipset sis_chipsets[] = {
-	
+
 		{ 0x0968, &sis_info133 },
 		{ 0x0966, &sis_info133 },
 		{ 0x0965, &sis_info133 },