avl_tool: replace `mosys smbios info` with dmidecode

The former is being removed from mosys, and we can easily get the same
information from machine DMI.

BUG=b:143649265
TEST=cargo test
BRANCH=None

Change-Id: I9d9391855c88a5592941400fa973de6eb0fe268a
Signed-off-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/flashrom/+/1938107
Commit-Queue: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
4 files changed