servod: ccd: add debug info

On error due to lack of CCD on a servo-v4 type-c, print CCD info for
a better diagnosis.

If a newer firmware is available, print how to update.

BUG=b:128646723
BRANCH=None
TEST=prints stuff on failure, or obsolete firmware.
CQ-DEPEND=CL:1490412

Change-Id: Ib164dd2ee193af88cd6d203e71b6e9b21bb1c903
Reviewed-on: https://chromium-review.googlesource.com/1524480
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Nick Sanders <nsanders@chromium.org>
Reviewed-by: Matthew Blecker <matthewb@chromium.org>
6 files changed