mb/system76/adl-p: Add Oryx Pro 9 as a variant

The Oryx Pro 9 (oryp9) is an Alder Lake-P board.

Tested with a custom TianoCore UefiPayloadPkg.

Working:

- PS/2 keyboard, touchpad
- Both DIMM slots (with NMSO480E82-3200EA00)
- Both M.2 NVME SSD slots (with MZVL2500HCJQ)
- All USB ports
- SD card reader
- Webcam
- Ethernet
- WiFi/Bluetooth
- Integrated graphics using Intel GOP driver
- Internal microphone
- Internal speakers
- Combined headphone + mic 3.5mm audio
- 3.5mm microphone input
- S0ix suspend/resume
- Booting Pop!_OS Linux 22.04 with kernel 5.18.6
- Internal flashing with flashrom v1.2-703-g76118a7c10ed

Not working:

- Discrete/Hybrid graphics
- HDMI output (requires NVIDIA GPU)
- Mini DisplayPort output (requires NVIDIA GPU)
- Detection of devices in TBT slot on boot

Change-Id: I8aac3e83f4423f444cb9ce8aa562ba465eb718c1
Signed-off-by: Tim Crawford <tcrawford@system76.com>

Documentation/mainboard/system76/oryp9.md

@@ -0,0 +1,44 @@
+# System76 Oryx Pro 9 (oryp9)
+
+## Specs
+
+- CPU
+  - Intel Core i7-12700H
+- EC
+  - ITE IT5570E running [System76 EC](https://github.com/system76/ec)
+- Graphics
+- Memory
+  - Up to 64GB (2x32GB) dual-channel DDR4 SO-DIMMs @ 3200 MHz
+- Networking
+  - Gigabit Ethernet
+  - M.2 NVMe/CNVi WiFi/Bluetooth (Intel Wi-Fi 6 AX200/201)
+- Power
+- Sound
+- Storage
+- USB
+- Dimensions
+  - 35.8cm x 24.0cm x 2.49cm, 2.4kg
+
+## Flashing coreboot
+
+```eval_rst
++---------------------+---------------------+
+| Type                | Value               |
++=====================+=====================+
+| Socketed flash      | no                  |
++---------------------+---------------------+
+| Vendor              | Macronix            |
++---------------------+---------------------+
+| Model               | MX25L25673G         |
++---------------------+---------------------+
+| Size                | 32 MiB              |
++---------------------+---------------------+
+| Package             | WSON-8              |
++---------------------+---------------------+
+| Internal flashing   | yes                 |
++---------------------+---------------------+
+| External flashing   | yes                 |
++---------------------+---------------------+
+```
+
+The flash chip (U61) is left of the DIMM slots.