drm/panel: truly-nt35521: transition to mipi_dsi wrapped functions

Use functions introduced in commit 966e397e ("drm/mipi-dsi: Introduce
mipi_dsi_*_write_seq_multi()") and commit f79d6d28
("drm/mipi-dsi: wrap more functions for streamline handling") for the
sony tulip truly nt35521 panel.
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240612163946.488684-1-tejasvipin76@gmail.com