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

[Benjamin Doron (Code Review)]

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

Benjamin Doron has uploaded a new patch set (#32) to the change originally created by Maximilian Brune. ( https://review.coreboot.org/c/coreboot/+/76591?usp=email )

The following approvals got outdated and were removed: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

Change subject: Add UPL FDT handoff
......................................................................

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

Tested: start qemu q35 with EDK2 UPL as the payload (pull the entire
patch train and https://github.com/tianocore/edk2/pull/6382) and boot to
the UEFI shell.

Change-Id: I36148e9de6ee992a67ec853ef5cbf1b5f83b44ae
Signed-off-by: Maximilian Brune 
Signed-off-by: Benjamin Doron 
---
M payloads/Kconfig
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
M src/lib/fit.c
M src/lib/fit_payload.c
A src/lib/tables.c
A src/lib/upl_fdt_table.c
M tests/lib/Makefile.mk
22 files changed, 494 insertions(+), 63 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/76591/32