[L] Change in coreboot[main]: mainboard: add Dell Latitude E7240

[Nicholas Chin (Code Review)]

Attention is currently required from: Arthur Heymans, Iru Cai, Nicholas Chin, Paul Menzel.

Nicholas Chin has uploaded a new patch set (#6) to the change originally created by Iru Cai. ( https://review.coreboot.org/c/coreboot/+/79746?usp=email )

The following approvals got outdated and were removed: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

Change subject: mainboard: add Dell Latitude E7240
......................................................................

mainboard: add Dell Latitude E7240

Based on autoport output.

It boots to Arch Linux (Linux 6.6.3) from USB and mSATA with SeaBIOS.

Change-Id: I6933bdbcc8d0bbb85d62657624740266284ac71c
Signed-off-by: Iru Cai 
Signed-off-by: Nicholas Chin 
---
A Documentation/mainboard/dell/e7240.md
A Documentation/mainboard/dell/e7240.webp
M Documentation/mainboard/index.md
A src/mainboard/dell/e7240/Kconfig
A src/mainboard/dell/e7240/Kconfig.name
A src/mainboard/dell/e7240/Makefile.mk
A src/mainboard/dell/e7240/acpi/ec.asl
A src/mainboard/dell/e7240/acpi/platform.asl
A src/mainboard/dell/e7240/acpi/superio.asl
A src/mainboard/dell/e7240/board_info.txt
A src/mainboard/dell/e7240/bootblock.c
A src/mainboard/dell/e7240/devicetree.cb
A src/mainboard/dell/e7240/dsdt.asl
A src/mainboard/dell/e7240/gma-mainboard.ads
A src/mainboard/dell/e7240/gpio.c
A src/mainboard/dell/e7240/hda_verb.c
A src/mainboard/dell/e7240/romstage.c
17 files changed, 473 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/46/79746/6