add hardware config to parzival

hosts/nixos/Parzival/hardware-configuration.nix

@@ -0,0 +1,26 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}: {
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
+
+  boot.initrd.availableKernelModules = ["sg" "nvme" "xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod"];
+  boot.initrd.kernelModules = [];
+  boot.kernelModules = ["kvm-amd"];
+
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+
+  hardware.amdgpu = {
+    initrd.enable = true;
+    amdvlk.enable = true;
+    opencl.enable = true;
+  };
+}