drm/panel: simple: switch to struct drm_edid

Prefer struct drm_edid based functions over struct edid.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/869e91527e8f9da054d776ed6109c7a6bc6151cb.1713273659.git.jani.nikula@intel.com


Signed-off-by: Jani Nikula <jani.nikula@intel.com>