[L] Change in coreboot[master]: mb/dell: Add Latitude E6430 (Ivy Bridge)

[Nicholas Chin (Code Review)]

Attention is currently required from: Nicholas Chin, Paul Menzel.

Hello Paul Menzel, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/77444?usp=email

to look at the new patch set (#4).

The following approvals got outdated and were removed: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

Change subject: mb/dell: Add Latitude E6430 (Ivy Bridge)
......................................................................

mb/dell: Add Latitude E6430 (Ivy Bridge)

Mainboard is QAL80/LA-7781P (UMA). The dGPU model was not tested.
This is based on the autoport output with some manual tweaks. The flash
is 8MiB + 4MiB, and is fairly easily accessed by removing the keyboard.
It can also be internally flashed by sending a command to the EC, which
causes the EC to pull the FDO pin low and the firmware to skip setting
up any chipset based write protections. [1] The EC is the SMSC MEC5055,
which seems to be compatible with the existing MEC5035 code.

Working:
- Libgfxinit
- USB EHCI debug (left side usb port is HCD index 2, middle port on the
  right side is HCD index 1)
- Keyboard
- Touchpad/trackpoint
- ExpressCard
- Audio
- Ethernet
- SD card reader
- mPCIe WiFi
- SeaBIOS 1.16.2
- edk2 (MrChromebox' fork, uefipayload_202306)
- Internal flashing

Not working:
- S3 suspend: It seems like the EC also controls the DRAM reset gate so
  there may be a command that needs to be implemented for this
- Physical Wireless switch
- Battery reporting
- Brightness hotkeys

Unknown/untested:
- Dock
- eSATA
- TPM
- dGPU on non-UMA model

[1] https://github.com/nic3-14159/e6400-flash-unlock

Change-Id: I93c6622fc5da1d0d61a5b2c197ac7227d9525908
Signed-off-by: Nicholas Chin 
---
A src/mainboard/dell/e6430/Kconfig
A src/mainboard/dell/e6430/Kconfig.name
A src/mainboard/dell/e6430/Makefile.inc
A src/mainboard/dell/e6430/acpi/ec.asl
A src/mainboard/dell/e6430/acpi/platform.asl
A src/mainboard/dell/e6430/acpi/superio.asl
A src/mainboard/dell/e6430/acpi_tables.c
A src/mainboard/dell/e6430/board_info.txt
A src/mainboard/dell/e6430/cmos.default
A src/mainboard/dell/e6430/cmos.layout
A src/mainboard/dell/e6430/data.vbt
A src/mainboard/dell/e6430/devicetree.cb
A src/mainboard/dell/e6430/dsdt.asl
A src/mainboard/dell/e6430/early_init.c
A src/mainboard/dell/e6430/gma-mainboard.ads
A src/mainboard/dell/e6430/gpio.c
A src/mainboard/dell/e6430/hda_verb.c
A src/mainboard/dell/e6430/mainboard.c
18 files changed, 589 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/44/77444/4