powerdevil: fix build with new ddcutil

https://hydra.nixos.org/build/123207159

The KDE ISO depends on this package, which blocks nixos-unstable.

Upstream bug: https://bugs.kde.org/show_bug.cgi?id=423605

pkgs/desktops/plasma-5/powerdevil.nix

@@ -1,5 +1,5 @@
 {
-  mkDerivation,
+  mkDerivation, fetchpatch,
   extra-cmake-modules, kdoctools,
   bluez-qt, kactivities, kauth, kconfig, kdbusaddons, kdelibs4support,
   kglobalaccel, ki18n, kidletime, kio, knotifyconfig, kwayland, libkscreen,
@@ -18,4 +18,14 @@ mkDerivation {
   cmakeFlags = [
     "-DHAVE_DDCUTIL=On"
   ];
+  patches = [
+    # This fixes an issue where 'DDCA_Feature_List*' cannot be converted to
+    # 'DDCA_Feature_List'.
+    # This can be dropped with the next release.
+    # https://bugs.kde.org/show_bug.cgi?id=423605
+    (fetchpatch {
+      url = "https://invent.kde.org/plasma/powerdevil/-/commit/fcb26be2fb279e6ad3b7b814d26a5921d16201eb.patch";
+      sha256 = "0gdyaa0nd1c1d6x2h0m933lascm8zm5sikd99wxmkf7hhaby6k2s";
+    })
+  ];
 }