Change in coreboot[master]: soc/intel/common/acpi: add ACPI S0ix _DSM for Intel Power Engine Plug-in

[Michael Niewöhner (Code Review)]

Attention is currently required from: V Sowmya, Cliff Huang, Tim Wawrzynczak, Paul Menzel, Balaji Manigandan, Bernardo Perez Priego, Patrick Rudolph.
Michael Niewöhner has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55127 )

Change subject: soc/intel/common/acpi: add ACPI S0ix _DSM for Intel Power Engine Plug-in
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Patch Set 8:

(5 comments)

File src/soc/intel/common/block/acpi/Kconfig:

https://review.coreboot.org/c/coreboot/+/55127/comment/59e5b485_6629563d 
PS8, Line 34: 	  Generate S0ix entries for Intel power engine plug-in. Linux exposes this under `/sys/kernel/debug/pmc_core/substate_requirement_registers`.
reflow, please

File src/soc/intel/common/block/acpi/acpi/pep.asl:

https://review.coreboot.org/c/coreboot/+/55127/comment/9b90d8d2_51a3aa89 
PS8, Line 143: ((
nit: no need for double braces

https://review.coreboot.org/c/coreboot/+/55127/comment/760c144d_c761b514 
PS8, Line 143: 57a6512e-3979-4e9d-9708-ff13b2508972
this UUID is only valid for >= TGL, isn't it? maybe add a comment to make this clear?

https://review.coreboot.org/c/coreboot/+/55127/comment/9c976e1a_8a458b8b 
PS8, Line 145: ((Arg2 == Zero))
nit: no need for double braces

https://review.coreboot.org/c/coreboot/+/55127/comment/3f9209f7_a5369b72 
PS8, Line 148: ((Arg2 == 0x01))
nit: no need for double braces