MLK-19317-2 drm/bridge: sec-dsim: fine tune for '720p@60Hz' mode on 2 lanes

MLK-19317-2 drm/bridge: sec-dsim: fine tune for '720p@60Hz' mode on 2 lanes

There is an issue that run several times of modetest 720p@60 test,
display turns to be abnormal or no display. So fine tunning the
DPHY TIMING config to use the same timing config of '720p@60Hz'
mode on 4 data lanes for the same display mode no 2 data lanes.
Until now, it works fine with this config.

Signed-off-by: Fancy Fang <chen.fang@nxp.com>
(cherry picked from commit 6ca115f778cf61691ef4c20d8473e5818f96ad31)
(cherry picked from commit 12740608ad7a6e94b6d1a9bdcffbc96087bb3a3e)