Add HWID information for ARM via crossystem

Added HWID query via crossystem if not available via ACPI. This populates
the hwclass field for crash reports.

BUG=None
TEST=Manually confirmed ARM platform crash reports contains correct hwclass
and manually confirmed ZGB report contains previously reported hwclas

Change-Id: I1216ed13c0b04d829313103d3bb736f5227a772b
Reviewed-on: http://gerrit.chromium.org/gerrit/7982
Reviewed-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Micah Catlin <micahc@chromium.org>
Commit-Ready: Katie Roberts-Hoffman <katierh@chromium.org>
Tested-by: Katie Roberts-Hoffman <katierh@chromium.org>
1 file changed
tree: 0d8197aa7a05c87a7e4b6503103e35dbfb97be68
  1. crash_reporter/