autotest: Ensure we don't regress LVDS downclocking on stout/parrot

We've added LVDS downclocking support for stout & parrot, ensure
we don't regress it.

BUG=none
TEST=by hand, run the test (note that the test fails because fbc is disabled, but passes for the rest)

Change-Id: I0fdb620e80492cac3f75484ccb51a155a2abd270
Reviewed-on: https://chromium-review.googlesource.com/172874
Tested-by: Stéphane Marchesin <marcheu@chromium.org>
Reviewed-by: Todd Broch <tbroch@chromium.org>
Commit-Queue: Stéphane Marchesin <marcheu@chromium.org>
1 file changed