vboot: allow options to be selected from .config

In order to allow easier setting of variables without
changing mainboards and/or chipset Kconfig files allow
the vboot options to be selected by the user.

Change-Id: I6e995eb209b4cd63c73ef679d0c5699759d129f5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10153
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed