add version and reset_count fields for cr50

When we are running faft on cr50 we need to be able to make sure there
are no unexpected reboots or rollbacks. This change adds fields to get
the version and reset count from cr50

BUG=none
CQ-DEPEND=CL:438788
BRANCH=none
TEST='dut-control version reset_count' returns the reset count and
version on an updated cr50

Change-Id: I1dbde21e5505a0bc89a4482f62af0a87609392b2
Signed-off-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/438789
Reviewed-by: Wai-Hong Tam <waihong@google.com>
2 files changed