util/sconfig: Refactor and fix add_register()

add_register() contained a duplicate check but only compared the new
key to the first (smallest in order) list member. Fix that and factor
the list handling out so it can be used by other functions.

Change-Id: I5a8346f36fa024351e1282c9681868ecf451b283
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41743
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions