Allow iwd to manage the network

- This is useful for AP mode, as if we don't then devices can fail to get an IP
  address assigned
diff --git a/modules/networking.nix b/modules/networking.nix
index ac82538..a0df108 100644
--- a/modules/networking.nix
+++ b/modules/networking.nix
@@ -4,6 +4,9 @@
 
     networking.wireless.iwd.enable = true;
     networking.wireless.iwd.settings = {
+      General = {
+        EnableNetworkConfiguration = true;
+      };
       Settings = {
         AutoConnect = true;
         AlwaysRandomizeAddress = true;