uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/os-specific/linux/logitech-udev-rules/default.nix

@@ -0,0 +1,19 @@
+{ lib, stdenv, solaar }:
+
+# ltunifi and solaar both provide udev rules but solaar's rules are more
+# up-to-date so we simply use that instead of having to maintain our own rules
+
+stdenv.mkDerivation {
+  pname = "logitech-udev-rules";
+  inherit (solaar) version;
+
+  buildCommand = ''
+    install -Dm444 -t $out/etc/udev/rules.d ${solaar.src}/rules.d/*.rules
+  '';
+
+  meta = with lib; {
+    description = "udev rules for Logitech devices";
+    inherit (solaar.meta) homepage license platforms;
+    maintainers = with maintainers; [ peterhoeg ];
+  };
+}