fix: Repair Surface tablet kernel specifics that got lost in the refactor

hw/nix-surface.nix

@@ -7,10 +7,19 @@
 {
   config,
   lib,
+  pkgs,
   modulesPath,
   inputs,
   ...
 }:
+let
+  # Use older kernel version for better Surface Go compatibility
+  refSystem = inputs.nixpkgs-old-kernel.lib.nixosSystem {
+    system = pkgs.stdenv.hostPlatform.system;
+    modules = [ inputs.nixos-hardware.nixosModules.microsoft-surface-go ];
+  };
+  refKernelPackages = refSystem.config.boot.kernelPackages;
+in
 {
   imports = [
     (modulesPath + "/installer/scan/not-detected.nix")
@@ -42,6 +51,9 @@
     "i915.enable_dc=0" # Disable display power saving
   ];
 
+  # Use older kernel for better Surface hardware support
+  boot.kernelPackages = lib.mkForce refKernelPackages;
+
   # ========== Filesystem Configuration ==========
   athenix.host.filesystem.swapSize = lib.mkDefault "8G";
   athenix.host.filesystem.device = lib.mkDefault "/dev/mmcblk0"; # eMMC storage # eMMC storage