intel/dev: Add Xe3 support to get_l3_list()

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31838>

src/intel/common/intel_l3_config.c

@@ -203,6 +203,9 @@ get_l3_list(const struct intel_device_info *devinfo)
    case 20:
       return &empty_l3_list;
 
+   case 30:
+      return &empty_l3_list;
+
    default:
       unreachable("Not implemented");
    }