Add Arkham to probe IDs and include memory info

BUG=chrome-os-partner:42141
BRANCH=none
TEST=crossystem prints all the values. mosys platform name prints Arkham

Change-Id: I954678af4c47094a6293ce4b1fbccde978741419
Signed-off-by: Suresh Rajashekara <sureshraj@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/283040
Reviewed-by: David Hendricks <dhendrix@chromium.org>
2 files changed