Add a PCR extend call for measuring the dev mode boot flag.

BUG=2083
TEST=manual

Compiled with DISABLE_ROLLBACK unset. I need help testing this change - in particular, if the PCR 0 value is actually different in dev mode off vs. dev mode on. This can be done by invoking 'tpm_pcrread -p 0' at the shell. tpm_pcrread is part of the tpm_tools package.

Change-Id: I0728fb776a0c9cb90d885e7a1c76ff6a1a41a17b

Review URL: http://codereview.chromium.org/3195018
2 files changed