drm/panel: himax-hx8394: transition to mipi_dsi wrapped functions

Changes the himax-hx8394 panel to use multi style functions for
improved error handling.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Tejas Vipin <tejasvipin76@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20250325094707.961349-1-tejasvipin76@gmail.com


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>