mb/clevo/n141cu: Add new Comet Lake mainboard

Add a new mainboard with the following specs:
- Intel i5-10210U (Comet Lake)
- Intel UHD graphics
- Intel HD audio
- 1x Ethernet 1Gbit/s
- 1x SATA3
- 1x M.2 slot x4 (PCIe/SATA)
- 1x M.2 slot x1 (WLAN/BT)
- 1x 3G/LTE
- USB2/3
- Thunderbolt
- HDMI, mDP
- CCD camera + mic
- SD card reader
- TPM2 SLB9670

The ACPI code has been taken from System76 CML-U mainboard series.

Tested:
- Clevo N141CU / TUXEDO InfinityBook Pro 14 v5
- SeaBIOS and TianoCore
- vboot with RO, RO+A, RO+A+B
- Booted Arch Linux
  - Linux 5.6.10
  - Linux LTS 5.4.38

What works / What works not:
- WLAN/BT does not work, but also not with vendor firmware.
- Everything else works.

Todos:
- Missing libgfxinit support, since it does not support the Comet Lake
platform yet.
- Different configuration switches mentioned in ramstage.c.

Signed-off-by: Felix Singer <felixsinger@posteo.net>
Change-Id: I9f83fab64e4cc9036698ca0fdd5edbb677d77eb9
---
M MAINTAINERS
A src/mainboard/clevo/Kconfig
A src/mainboard/clevo/Kconfig.name
A src/mainboard/clevo/cml-u/Kconfig
A src/mainboard/clevo/cml-u/Kconfig.name
A src/mainboard/clevo/cml-u/Makefile.inc
A src/mainboard/clevo/cml-u/acpi/ac.asl
A src/mainboard/clevo/cml-u/acpi/battery.asl
A src/mainboard/clevo/cml-u/acpi/buttons.asl
A src/mainboard/clevo/cml-u/acpi/ec.asl
A src/mainboard/clevo/cml-u/acpi/ec_ram.asl
A src/mainboard/clevo/cml-u/acpi/gpe.asl
A src/mainboard/clevo/cml-u/acpi/hid.asl
A src/mainboard/clevo/cml-u/acpi/keyboard.asl
A src/mainboard/clevo/cml-u/acpi/lid.asl
A src/mainboard/clevo/cml-u/acpi/mainboard.asl
A src/mainboard/clevo/cml-u/acpi/sleep.asl
A src/mainboard/clevo/cml-u/acpi/tbt.asl
A src/mainboard/clevo/cml-u/board_info.txt
A src/mainboard/clevo/cml-u/dsdt.asl
A src/mainboard/clevo/cml-u/fmds/vboot-ro.fmd
A src/mainboard/clevo/cml-u/fmds/vboot-roa.fmd
A src/mainboard/clevo/cml-u/fmds/vboot-roab.fmd
A src/mainboard/clevo/cml-u/ramstage.c
A src/mainboard/clevo/cml-u/romstage.c
A src/mainboard/clevo/cml-u/variants/n141cu/data.vbt
A src/mainboard/clevo/cml-u/variants/n141cu/devicetree.cb
A src/mainboard/clevo/cml-u/variants/n141cu/gma-mainboard.ads
A src/mainboard/clevo/cml-u/variants/n141cu/hda_verb.c
A src/mainboard/clevo/cml-u/variants/n141cu/include/gpio_table.h
30 files changed, 1,705 insertions(+), 0 deletions(-)