Change in coreboot[master]: mainboards/hp: Add HP Elitebook 2760p

[Iru Cai (Code Review)]

Iru Cai has uploaded a new patch set (#23). ( https://review.coreboot.org/18241 )

Change subject: mainboards/hp: Add HP Elitebook 2760p
......................................................................

mainboards/hp: Add HP Elitebook 2760p

The code is generated by autoport.

The flash chip is socketed beside the WLAN slot. The EHCI debug port
is on right side of the laptop beside the RJ11 connector.

Things that work:
- memory: 0+8G, 4G+8G
- Linux (Linux Mint 18.1 with Linux 4.4)
- native graphics init + SeaBIOS payload with SeaVGABIOS
- all 3 USB ports
- WLAN
- WWAN
- expresscard
- S3 suspend and resume
- internal flashing after IFD is unlocked and coreboot is flashed
- keyboard, trackpoint and touchpad
- fan control
- AC and battery status

Issues:
- wacom digitizer
- caps lock and num lock LED blink on boot
- GRUB payload will freeze (in previous patch sets)

Things that are not tested:
- WWAN
- SD card reader
- smart card reader
- cable modem

(EC) blobs:

This laptop uses SMSC KBC1126-NU as EC. It needs two blobs in the
flash chip. You can use the tools in util/kbc1126 to extract them
from OEM firmware, and use the following configuration to insert
them to coreboot image:

-> Chipset
    -> Add firmware images for KBC1126 firmware

Change-Id: I3ffdb9f9c71f6c9a84e896abc3c424c8dd4bed0e
Signed-off-by: Iru Cai 
---
A src/mainboard/hp/2760p/Kconfig
A src/mainboard/hp/2760p/Kconfig.name
A src/mainboard/hp/2760p/Makefile.inc
A src/mainboard/hp/2760p/acpi/ec.asl
A src/mainboard/hp/2760p/acpi/platform.asl
A src/mainboard/hp/2760p/acpi/superio.asl
A src/mainboard/hp/2760p/acpi_tables.c
A src/mainboard/hp/2760p/board_info.txt
A src/mainboard/hp/2760p/devicetree.cb
A src/mainboard/hp/2760p/dsdt.asl
A src/mainboard/hp/2760p/gma-mainboard.ads
A src/mainboard/hp/2760p/gpio.c
A src/mainboard/hp/2760p/hda_verb.c
A src/mainboard/hp/2760p/mainboard.c
A src/mainboard/hp/2760p/romstage.c
15 files changed, 756 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/41/18241/23