[M] Change in coreboot[main]: cpu/intel/model_206ax: Only use supported C-states

[Kyösti Mälkki (Code Review)]

Attention is currently required from: Patrick Rudolph, Paul Menzel.

Kyösti Mälkki has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/78194?usp=email )

Change subject: cpu/intel/model_206ax: Only use supported C-states
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Patch Set 4: Code-Review+2

(1 comment)

File src/cpu/intel/model_206ax/acpi.c:

https://review.coreboot.org/c/coreboot/+/78194/comment/2a02d726_5ef07a83 :
PS4, Line 161: 	acpigen_write_CST_package(acpi_cstate_map, count);
Just an idea for future.. if we create the exact same _CST for each thread, could we not replace it with a reference something like Return("\\CP00._CST") to reduce amount of ACPI table space?