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/build-support/skaware/build-skaware-man-pages.nix

@@ -0,0 +1,45 @@
+{ lib, stdenv, fetchFromGitHub }:
+
+{
+  # : string
+  pname
+  # : string
+, version
+  # : string
+, sha256
+  # : string
+, description
+  # : list Maintainer
+, maintainers
+  # : license
+, license ? lib.licenses.isc
+  # : string
+, owner ? "flexibeast"
+  # : string
+, rev ? "v${version}"
+}:
+
+let
+  manDir = "${placeholder "out"}/share/man";
+
+  src = fetchFromGitHub {
+    inherit owner rev sha256;
+    repo = pname;
+  };
+in
+
+stdenv.mkDerivation {
+  inherit pname version src;
+
+  makeFlags = [
+    "MANPATH=${manDir}"
+  ];
+
+  dontBuild = true;
+
+  meta = with lib; {
+    inherit description license maintainers;
+    inherit (src.meta) homepage;
+    platforms = platforms.all;
+  };
+}