Rename from save_chromeos_gpios() to init_bootmode_straps()

This feature is no longer specific to ChromeOS builds.

Change-Id: If27d4dc7caff8a551b5b325cdebdd05c079ec921
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5641
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/include/bootmode.h

@@ -20,6 +20,8 @@
 #ifndef __BOOTMODE_H__
 #define __BOOTMODE_H__
 
+/* functions implemented per mainboard: */
+void init_bootmode_straps(void);
 int get_developer_mode_switch(void);
 int get_recovery_mode_switch(void);