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/i82801ix/sata.c b/src/southbridge/intel/i82801ix/sata.c
index 49d2d36..fa6c1df 100644
--- a/src/southbridge/intel/i82801ix/sata.c
+++ b/src/southbridge/intel/i82801ix/sata.c
@@ -25,6 +25,7 @@
 #include <pc80/mc146818rtc.h>
 #include <types.h>
 
+#include "chip.h"
 #include "i82801ix.h"
 
 typedef struct southbridge_intel_i82801ix_config config_t;