[M] Change in coreboot[main]: soc/intel/xeon_sp: Add PD_TYPE_CLUSTER

[Lean Sheng Tan (Code Review)]

Attention is currently required from: Angel Pons, Arthur Heymans, Chen, Gang C, Christian Walter, Johnny Lin, Jonathan Zhang, Patrick Rudolph, Shuo Liu, Tim Chu, Ziang Wang.

Lean Sheng Tan has posted comments on this change by Shuo Liu. ( https://review.coreboot.org/c/coreboot/+/81443?usp=email )

Change subject: soc/intel/xeon_sp: Add PD_TYPE_CLUSTER
......................................................................

Patch Set 6: Code-Review+1

(1 comment)

Patchset:

PS6:
> GNR is not impacted, is_iio_cxl_stack is return with false without implementation at the moment.

Done