[libata] trim trailing whitespace

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

Signed-off-by: Jeff Garzik <jeff@garzik.org>

include/linux/libata.h

@@ -308,7 +308,7 @@ enum {
 	 * most devices.
 	 */
 	ATA_SPINUP_WAIT		= 8000,
-	
+
 	/* Horkage types. May be set by libata or controller on drives
 	   (some horkage may be drive/controller pair dependant */