sb/intel/i82801gx: Include chip.h directly

Change-Id: I3d743e90444292be687999ab4f50aa89d514fbad
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33171
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/lenovo/x60/mainboard.c b/src/mainboard/lenovo/x60/mainboard.c
index 274a151..964e9c0 100644
--- a/src/mainboard/lenovo/x60/mainboard.c
+++ b/src/mainboard/lenovo/x60/mainboard.c
@@ -22,6 +22,7 @@
 #include <arch/io.h>
 #include <ec/acpi/ec.h>
 #include <northbridge/intel/i945/i945.h>
+#include <southbridge/intel/i82801gx/chip.h>
 #include "dock.h"
 #include <drivers/intel/gma/int15.h>
 #include <drivers/lenovo/lenovo.h>