Get FWID from crossystem instead of /sys/.../chromeos_acpi/FWID.

Also close a few files and make the test fail if it cannot restart tcsd
at the end, otherwise following tests may fail more mysteriously.

BUG=chromium-os:14145
TEST=tested that the test still passes

Change-Id: I82d0aabf113267f29d39b5b08f5cb41e0bbc17c6
Reviewed-on: https://gerrit.chromium.org/gerrit/8428
Tested-by: Luigi Semenzato <semenzato@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
Commit-Ready: Luigi Semenzato <semenzato@chromium.org>
1 file changed