servod: update servo_micro before start

Like servo_v4, we call servo_updater to update servo_micro as well
before start servod.

BUG=chromium:950713
TEST=Start/stop servod on my local labstation.

Change-Id: Ie5ecc0690f24ea318219299d40b121d6ad7d9562
Reviewed-on: https://chromium-review.googlesource.com/1560186
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Congbin Guo <guocb@chromium.org>
Reviewed-by: Nick Sanders <nsanders@chromium.org>
Reviewed-by: Matthew Blecker <matthewb@chromium.org>
2 files changed