drm/intel/pciids: Refactor DG2 PCI IDs into segment ranges

drm/intel/pciids: Refactor DG2 PCI IDs into segment ranges

Refactor DG2 PCI IDs into D, E and M ranges which will be useful for
segment specific features.

v3: Rework subplatform naming (Jani)

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Riana Tauro <riana.tauro@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241211115952.1659287-2-raag.jadav@intel.com