Add #include guards to all Super I/O header files (trivial).

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6049 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/superio/nsc/pc87309/chip.h

@@ -18,6 +18,9 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#ifndef SUPERIO_NSC_PC87309_CHIP_H
+#define SUPERIO_NSC_PC87309_CHIP_H
+
 #include <pc80/keyboard.h>
 #include <uart8250.h>
 
@@ -27,3 +30,5 @@ struct superio_nsc_pc87309_config {
 	struct uart8250 com1, com2;
 	struct pc_keyboard keyboard;
 };
+
+#endif