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)