drm/i915/bios: Define VBT block 24 (SDVO LVDS PnP ID) contents

Define the contents of VBT block 24 (SDVO LVDS PnP ID).

The descriotion is not part of the VBT spec anymore, but the layout
is rather obsvious.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-24-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>