drm/xe: Add few more GT register definitions

While we are not using these registers right now, they are part
of some runtime register lists that PF driver share with VFs on
some legacy platforms that we might want to support as SDV.

Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240423180436.2089-4-michal.wajdeczko@intel.com