[L] Change in coreboot[main]: [RFC] Add UPL FDT handoff

[Maximilian Brune (Code Review)]

Attention is currently required from: Arthur Heymans, Jakub Czapiga, Julius Werner, Jérémy Compostella, Lean Sheng Tan, Matt DeVillier, Maximilian Brune, Philipp Hug, Simon Glass, ron minnich.

Hello Jakub Czapiga, Julius Werner, Jérémy Compostella, Lean Sheng Tan, Matt DeVillier, Philipp Hug, Simon Glass, build bot (Jenkins), ron minnich,

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

https://review.coreboot.org/c/coreboot/+/76591?usp=email

to look at the new patch set (#20).

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: [RFC] Add UPL FDT handoff
......................................................................

[RFC] Add UPL FDT handoff

This adds another handoff that is basically the same as coreboot tables.
The only real difference is that it uses the devicetree format to
transfer the information to payload.
This handoff is inspired by the UPL (universal payload) specification.

Tested: start q35 qemu with coreinfo as payload and see that console
still works and the devicetree is printed by coreboot.

Change-Id: I36148e9de6ee992a67ec853ef5cbf1b5f83b44ae
Signed-off-by: Maximilian Brune 
---
M payloads/Kconfig
M payloads/libpayload/arch/arm/coreboot.c
M payloads/libpayload/arch/arm64/coreboot.c
M payloads/libpayload/arch/x86/coreboot.c
M payloads/libpayload/include/sysinfo.h
M payloads/libpayload/libc/Makefile.mk
A payloads/libpayload/libc/upl_fdt.c
M src/arch/arm/include/arch/cbconfig.h
M src/arch/arm64/include/arch/cbconfig.h
M src/arch/ppc64/include/arch/cbconfig.h
M src/arch/riscv/include/arch/cbconfig.h
M src/arch/x86/include/arch/cbconfig.h
M src/arch/x86/tables.c
M src/commonlib/bsd/include/commonlib/bsd/cbmem_id.h
M src/drivers/uart/pl011.c
M src/drivers/uart/uart8250io.c
M src/drivers/uart/uart8250mem.c
M src/include/boot/coreboot_tables.h
M src/include/boot/tables.h
A src/include/boot/upl_fdt_table.h
M src/lib/Makefile.mk
M src/lib/bootmem.c
M src/lib/coreboot_table.c
A src/lib/tables.c
A src/lib/upl_fdt_table.c
M tests/lib/Makefile.mk
26 files changed, 649 insertions(+), 62 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/76591/20