Fix keyboard probe value resolution for legacy export.

BUG=chrome-os-partner:9385
TEST=Check if the keyboard variant value is resolved.

Change-Id: Ia35b088b4f86b6fae6047d22eff7423d76e19a45
Reviewed-on: https://gerrit.chromium.org/gerrit/22089
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Tested-by: Tammo Spalink <tammo@chromium.org>
Commit-Ready: Tammo Spalink <tammo@chromium.org>
1 file changed