cros_unibuild_convert: add /cros-healthd:has-backlight to generated config

When doing a unibuild conversion, replicate the logic in CL:2347141.

BUG=chromium:1114358
TEST=run for samus

Change-Id: I7948718917e61f439ffe36ad9204f33a056d4bfa
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2349670
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Trent Begin <tbegin@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
1 file changed