vboot: deprecate VbExError function

Convert uses of this function to call VB2_DEBUG and manually
exit if necessary.

BUG=b:124141368
TEST=make clean && make runtests
BRANCH=none

Change-Id: I9006b1a9c66645757d33310d96207233b88eaed5
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/1710340
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Joel Kitching <kitching@chromium.org>
6 files changed