tpm_manager: Expose TPM version information.

This adds version information fields to the result of the GetTpmStatus
operation and adds the corresponding logic to acquire the relevant
information via trunks / trousers and fill in the reply.

BUG=chromium:728134
TEST=unit tests

Change-Id: I0006e69b2d92837574960d2f306e1a04376e29ea
Reviewed-on: https://chromium-review.googlesource.com/517797
Commit-Ready: Mattias Nissler <mnissler@chromium.org>
Tested-by: Mattias Nissler <mnissler@chromium.org>
Reviewed-by: Andrey Pronin <apronin@chromium.org>
10 files changed