debugd: collect cr50 version

Let's grab the version info that cr50's usb_updater leaves in /var/cache.

Signed-off-by: Benson Leung <bleung@chromium.org>

BUG=chrome-os-partner:61301
TEST=reboot system. Check that "cr50_version" appears in chrome://system
CQ-DEPEND=CL:431504

Reviewed-on: https://chromium-review.googlesource.com/431264
Commit-Ready: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 1526c8f9a7d89515ac853fe5ffdd2387f7728c2b)

Change-Id: I3ab334a00dc9d153a0fa97e31f1a10bb6abe6f89
Reviewed-on: https://chromium-review.googlesource.com/431546
Commit-Queue: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>
Trybot-Ready: Benson Leung <bleung@chromium.org>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
1 file changed