mainboard: Trivial - drop trailing blank lines at EOF in .h

Change-Id: I4a4ee99468e5f1dae8412ae565a34290493db726
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6201
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins)

src/mainboard/iei/kino-780am2-fam10/mb_sysconf.h

@@ -42,4 +42,3 @@ struct mb_sysconf_t {
 };
 
 #endif
-