southbridge/intel: Tidy up preprocessor and headers

Change-Id: I52a7b39566acd64ac21a345046675e05649a40f5
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34980
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/southbridge/intel/lynxpoint/me_9.x.c b/src/southbridge/intel/lynxpoint/me_9.x.c
index 09eeff2..8d86e68 100644
--- a/src/southbridge/intel/lynxpoint/me_9.x.c
+++ b/src/southbridge/intel/lynxpoint/me_9.x.c
@@ -35,6 +35,7 @@
 #include <elog.h>
 #include <halt.h>
 
+#include "chip.h"
 #include "me.h"
 #include "pch.h"