mainboard: Sanitize some superio include paths to be non-local

This brings mainboard up to being consistent tree-wide now for
all superio header path inclusions.

Change-Id: I00a806ce209ba363c62e3ddd49db9bf599f32149
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/8052
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
diff --git a/src/mainboard/lenovo/x60/dock.c b/src/mainboard/lenovo/x60/dock.c
index 1f85281..1a843d9 100644
--- a/src/mainboard/lenovo/x60/dock.c
+++ b/src/mainboard/lenovo/x60/dock.c
@@ -26,7 +26,7 @@
 #include <arch/io.h>
 #include "dock.h"
 #include "southbridge/intel/i82801gx/i82801gx.h"
-#include "superio/nsc/pc87392/pc87392.h"
+#include <superio/nsc/pc87392/pc87392.h>
 
 static void dlpc_write_register(int reg, int value)
 {