Teach autotests to work on x86-alex32 and x86-zgb32.

This is a combination of 2 commits.

The first commit's message is:

Teach autotests to work on x86-alex32 and x86-zgb32.

BUG=chrome-os-partner:9174
TEST=Remote trybot run.

Reviewed-on: https://gerrit.chromium.org/gerrit/20795
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Commit-Ready: David James <davidjames@chromium.org>
Tested-by: David James <davidjames@chromium.org>
(cherry picked from commit 68df207250dbe0b79e8545c144d087b1886e5f07)

Add support for x86-alex32 and x86-zgb32.

BUG=chrome-os-partner:9174
TEST=Remote trybot run.

Reviewed-on: https://gerrit.chromium.org/gerrit/20796
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Commit-Ready: David James <davidjames@chromium.org>
Tested-by: David James <davidjames@chromium.org>
(cherry picked from commit 9d7e1c0c6dcf34e4a35960c33ac6c5ee4c49ba77)

BUG=chromium-os:30387
TEST=grep for x86-alex and x86-zgb
Change-Id: I4286391f64a1c556d52aa01f385b58974558bb74
Reviewed-on: https://gerrit.chromium.org/gerrit/21644
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Tested-by: David James <davidjames@chromium.org>
3 files changed