mb/system76/adl-p: Add Lemur Pro 11 as a variant

The Lemur Pro 11 (lemp11) is an Alder Lake-U board.

Tested with a custom TianoCore UefiPayloadPkg.

Working:

- PS/2 keyboard, touchpad
- DIMM slot (with NMSO480E82-3200EA00)
- M.2 NVMe SSD (with MZVL2500HCJQ)
- M.2 SATA SSD (with WDS100T2B0B)
- All USB ports
- SD card reader
- Webcam
- WiFi/Bluetooth
- Integrated graphics using Intel GOP driver
- HDMI output
- DisplayPort output over USB-C
- Internal microphone
- Internal speakers
- Combined headset + mic 3.5mm audio
- Booting Pop!_OS Linux 22.04 with kernel 5.18.5
- Internal flashing with flashrom v1.2-703-g76118a7c10ed

Not working:

- On-board RAM: Requires CB:65567
- Detection of devices in TBT slot on boot
- S0ix suspend/resume

Change-Id: Ic930df1ebacc8c7ef14dbb6c67a97eddb918b365
Signed-off-by: Tim Crawford <tcrawford@system76.com>

Documentation/mainboard/index.md

@@ -209,6 +209,7 @@ The boards in this section are not real mainboards, but emulators.
 - [Gazelle 16](system76/gaze16.md)
 - [Lemur Pro 9](system76/lemp9.md)
 - [Lemur Pro 10](system76/lemp10.md)
+- [Lemur Pro 11](system76/lemp11.md)
 - [Oryx Pro 5](system76/oryp5.md)
 - [Oryx Pro 6](system76/oryp6.md)
 - [Oryx Pro 7](system76/oryp7.md)