chromeos / broadwell / jecht: Make save_chromeos_gpios() jecht-specific

This callback was only required for a single mainboard, and it can
easily be moved to mainboard-specific code. This patch removes it from
the global namespace and isolates it to the Jecht board. (This makes
it easier to separate vboot and chromeos code in a later patch.)

Change-Id: I9cf67a75a052d1c86eda0393b6a9fbbe255fedf8
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/18981
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)

src/soc/intel/broadwell/romstage/romstage.c

@@ -19,6 +19,7 @@
 #include <arch/io.h>
 #include <arch/cbfs.h>
 #include <arch/early_variables.h>
+#include <bootmode.h>
 #include <console/console.h>
 #include <cbfs.h>
 #include <cbmem.h>
@@ -35,7 +36,6 @@
 #include <soc/reset.h>
 #include <soc/romstage.h>
 #include <soc/spi.h>
-#include <vendorcode/google/chromeos/chromeos.h>
 
 /* Entry from cache-as-ram.inc. */
 asmlinkage void *romstage_main(unsigned long bist,
@@ -79,10 +79,6 @@ asmlinkage void *romstage_main(unsigned long bist,
 	/* Call into mainboard. */
 	mainboard_romstage_entry(&rp);
 
-#if CONFIG_CHROMEOS
-	save_chromeos_gpios();
-#endif
-
 	return setup_stack_and_mttrs();
 }