lenovo/thinkpad/p16s/amd/gen2: init

Notes:

- Tested on a model 21K9CTR1WW configured with:
  - AMD Ryzen 7 PRO 7840U with Radeon 780M Graphics
  - 64 GB soldered RAM
  - WQUXGA (3840×2400) OLED display
  - Qualcomm NFA765 wireless network adapter
  - BIOS version R2FET38W (1.18)
- The user guide is shared by:
  - ThinkPad P14s Gen 4
  - ThinkPad P16s Gen 2
  - ThinkPad T14 Gen 4
  - ThinkPad T16 Gen 2

lenovo/thinkpad/p16s/amd/gen2/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ../.
+  ];
+}