chromeos: vboot_common: Avoid code duplication when grabbing the handoff info

vboot_handoff_flag was duplicating the logic to grab the handoff info, that is
already made available with vboot_get_handoff_info.
This uses vboot_get_handoff_info in vboot_handoff_flag instead.

Change-Id: I28f1decce98f988f90c446a3a0dbe7409d714527
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-on: http://review.coreboot.org/11498
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed