drm/panel: simple: Check against num_timings when setting preferred for timing
commit
230c5b44233ff0543c0b5ccf4ff9400057010fbe upstream.
In the loop on .timings, we should check .num_timings to see if it's the
only mode specified, not .num_modes, which should be used with .modes.
Fixes:
cda553725c92 ("drm/panel: simple: Set appropriate mode type")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>