tree c2a349ec36400d673c753f71a6d40e6f2d4b4ace
parent 114b60a7e62db25bcf26d5dddcfabecbc0160086
author Simon Glass <sjg@chromium.org> 1538416517 -0600
committer Simon Glass <sjg@chromium.org> 1539081627 -0600

sandbox: tpm: Tidy up enums and return values

Use an enum for command values instead of open-coding them. This removes
the need for comments. Also make sure the driver returns proper error
numbers instead of -1.

Signed-off-by: Simon Glass <sjg@chromium.org>