Some LVDS connectors don't have a ddc bus, so reset the
ddc bus to invalid before parsing the next connector
to avoid using stale ddc bus data. Should fix
fdo bug 28164.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>