Add acpi_call module

lenovo/thinkpad/acpi_call.nix

@@ -0,0 +1,10 @@
+# acpi_call makes tlp work for newer thinkpads
+
+{ config, ... }:
+
+{
+  boot = {
+    kernelModules = [ "acpi_call" ];
+    extraModulePackages = with config.boot.kernelPackages; [ acpi_call ];
+  };
+}

lenovo/thinkpad/x230/default.nix

@@ -4,14 +4,11 @@
   imports = [
     ../.
     ../../../common/cpu/intel
+    ../acpi_call.nix
   ];
 
   boot = {
-    extraModulePackages = with config.boot.kernelPackages; [
-      acpi_call
-    ];
     kernelModules = [
-      "acpi_call"
       "tpm-rng"
     ];
   };