vboot: expose vbnv_reset() function

It's helpful to use the common vbnv_reset() function to
initialize the vbnv contents when backing store failures occur.
Therefore, allow that to happen.

BUG=b:63054105

Change-Id: I990639e8c163469733fdab0d3c72e064acc9f8d8
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/21559
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
2 files changed