Change in coreboot[master]: mb/clevo/tgl-u: Add Clevo NV4x Tiger Lake laptop support

[Michał Kopeć (Code Review)]

Attention is currently required from: Felix Singer, Michał Żygowski, Angel Pons, Michael Niewöhner.
Hello Felix Singer, build bot (Jenkins), Michał Żygowski, Angel Pons, Michael Niewöhner,

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

https://review.coreboot.org/c/coreboot/+/62498

to look at the new patch set (#12).

Change subject: mb/clevo/tgl-u: Add Clevo NV4x Tiger Lake laptop support
......................................................................

mb/clevo/tgl-u: Add Clevo NV4x Tiger Lake laptop support

Add support for the Clevo NV4x series of laptops (NV4xMZ/MB/ME).
These laptops have an Intel TigerLake-U processor and an ITE IT5570E
embedded controller, and with come optional NVIDIA Optimus hybrid
graphics depending on model. `x` in device name indicates chassis
color.

Original devicetree based on system76/galp5.

Working:
- Booting UEFI OS via TianoCore payload from MrChromebox's fork
- All hotkeys - except Touchpad Toggle, which requires tweak in OS
- s0ix / modern standby, including when a USB-C is device connected
- Onboard discrete TPM 2.0
- USB-A and USB-C ports including TBT, HDMI, SD card, audio
- Ethernet, CNVi Wi-Fi / PCIe Wi-Fi, Bluetooth

Not working:
- ACPI UCSI interface - possibly due to bug in EC FW
- dTPM detection when PTT is enabled in the ME region

Change-Id: Ib373d62d9d18bafdfde2e1acb4e00e3a20ae09bc
Signed-off-by: Michał Kopeć 
---
M src/mainboard/clevo/tgl-u/Kconfig
M src/mainboard/clevo/tgl-u/Kconfig.name
A src/mainboard/clevo/tgl-u/acpi/mainboard.asl
A src/mainboard/clevo/tgl-u/acpi/sleep.asl
M src/mainboard/clevo/tgl-u/dsdt.asl
A src/mainboard/clevo/tgl-u/mainboard.asl
A src/mainboard/clevo/tgl-u/variants/nv40mz/board_info.txt
A src/mainboard/clevo/tgl-u/variants/nv40mz/data.vbt
A src/mainboard/clevo/tgl-u/variants/nv40mz/devicetree.cb
A src/mainboard/clevo/tgl-u/variants/nv40mz/gpio.c
A src/mainboard/clevo/tgl-u/variants/nv40mz/gpio_early.c
A src/mainboard/clevo/tgl-u/variants/nv40mz/hda_verb.c
A src/mainboard/clevo/tgl-u/variants/nv40mz/ramstage.c
A src/mainboard/clevo/tgl-u/variants/nv40mz/romstage.c
14 files changed, 759 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/62498/12