trunks: implement ManageCCDPwd cr50 command

Add support for VENDOR_CC_MANAGE_CCD_PWD vendor command.

BUG=b:69972868
TEST=unit tests

Change-Id: I3138c6846b460764fa1ae2af3a6a465ce2962f34
Reviewed-on: https://chromium-review.googlesource.com/804600
Commit-Ready: Andrey Pronin <apronin@chromium.org>
Tested-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Andrey Pronin <apronin@chromium.org>
6 files changed