This utility function is provided for API-compatibility and simply calls
|PKCS12_parse| internally.
BUG=536939
Change-Id: I86c548e5dfd64b6c473e497b95adfa5947fe9529
Reviewed-on: https://boringssl-review.googlesource.com/6008
Reviewed-by: Adam Langley <agl@google.com>