[L] Change in coreboot[main]: acpi: Add PPTT support

[David Milosevic (Code Review)]

Attention is currently required from: Angel Pons, Arthur Heymans, Cliff Huang, David Milosevic, Lance Zhao, Martin L Roth, Maximilian Brune, Nico Huber, Patrick Rudolph, Tim Wawrzynczak.

Hello Arthur Heymans, Cliff Huang, Lance Zhao, Maximilian Brune, Nico Huber, Tim Wawrzynczak, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/78071?usp=email

to look at the new patch set (#23).

The following approvals got outdated and were removed:
Code-Review+1 by Nico Huber, Verified+1 by build bot (Jenkins)

Change subject: acpi: Add PPTT support
......................................................................

acpi: Add PPTT support

This patch adds code to generate Processor Properties
Topology Tables (PPTT) compliant to the ACPI 6.4 specification.

- The 'acpi_get_pptt_topology' hook is mandatory once ACPI_PPTT
 is selected. Its purpose is to return a pointer to a topology tree,
 which describes the relationship between CPUs and caches. The hook
 can be provided by, for example, mainboard code.

Background: We are currently working on mainboard code for qemu-sbsa
and Neoverse N2. Both require a valid PPTT table. Patch was tested
against the qemu-sbsa board.

Change-Id: Ia119e1ba15756704668116bdbc655190ec94ff10
Signed-off-by: David Milosevic 
---
M src/acpi/Kconfig
M src/acpi/Makefile.inc
M src/acpi/acpi.c
A src/acpi/acpi_pptt.c
M src/include/acpi/acpi.h
5 files changed, 324 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/78071/23