linux-phytec-fsl

dm verity: clean up duplicate hashing code

Handle dm-verity salting in one place to simplify the code.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>