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/vendorcode/google/chromeos/chromeos.h

@@ -26,9 +26,6 @@
 
 /* functions implemented per mainboard: */
 int get_write_protect_state(void);
-#ifdef __PRE_RAM__
-void save_chromeos_gpios(void);
-#endif
 
 /* functions implemented in vbnv.c: */
 int get_recovery_mode_from_vbnv(void);