enable microcode updates on acer

hosts/acer.nix

@@ -62,6 +62,7 @@ rec {
     pc = true;
     enablePlasma = true;
     intelCpu = false;
+    amdCpu = true;
     noMitigations = false;
     enablePulseaudio = true;
     sshd = true;

modules/default.nix

@@ -3,6 +3,7 @@
 {
   imports = [
     hardware/intel-cpu.nix
+    hardware/amd-cpu.nix
     hardware/no-mitigations.nix
 
     system/roles.nix

modules/hardware/amd-cpu.nix

@@ -0,0 +1,10 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  options.lumpiasty.amdCpu = lib.mkEnableOption "Enable amd CPU";
+
+  config = lib.mkIf config.lumpiasty.amdCpu {
+    nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+    hardware.cpu.amd.updateMicrocode = true;
+  };
+}