buildsystem: Promote rules.h to default include

Does not fix 3rdparty/, *.S or *.ld or yet.

Change-Id: I66b48013dd89540b35ab219d2b64bc13f5f19cda
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/17656
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/lib/bootmode.c

@@ -13,7 +13,6 @@
  * GNU General Public License for more details.
  */
 
-#include <rules.h>
 #include <bootmode.h>
 #include <vendorcode/google/chromeos/chromeos.h>
 

src/lib/cbmem_common.c

@@ -15,7 +15,6 @@
 
 #include <cbmem.h>
 #include <bootstate.h>
-#include <rules.h>
 #include <symbols.h>
 
 void cbmem_run_init_hooks(int is_recovery)

src/lib/ext_stage_cache.c

@@ -18,7 +18,6 @@
 #include <cbmem.h>
 #include <console/console.h>
 #include <imd.h>
-#include <rules.h>
 #include <stage_cache.h>
 #include <string.h>
 

src/lib/imd_cbmem.c

@@ -18,7 +18,6 @@
 #include <console/console.h>
 #include <cbmem.h>
 #include <imd.h>
-#include <rules.h>
 #include <string.h>
 #include <stdlib.h>
 #include <arch/early_variables.h>

src/lib/prog_loaders.c

@@ -25,7 +25,6 @@
 #include <reset.h>
 #include <romstage_handoff.h>
 #include <rmodule.h>
-#include <rules.h>
 #include <stage_cache.h>
 #include <symbols.h>
 #include <timestamp.h>

src/lib/romstage_handoff.c

@@ -18,7 +18,6 @@
 #include <cbmem.h>
 #include <console/console.h>
 #include <romstage_handoff.h>
-#include <rules.h>
 
 struct romstage_handoff {
 	/* Indicate if the current boot is an S3 resume. If

src/lib/timestamp.c

@@ -23,7 +23,6 @@
 #include <timer.h>
 #include <timestamp.h>
 #include <arch/early_variables.h>
-#include <rules.h>
 #include <smp/node.h>
 
 #define MAX_TIMESTAMPS 192