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/tools/compression/imagelol/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchFromGitHub, cmake }:
+
+stdenv.mkDerivation rec {
+  pname = "imagelol";
+  version = "0.2";
+
+  src = fetchFromGitHub {
+    owner = "MCRedstoner2004";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0978zdrfj41jsqm78afyyd1l64iki9nwjvhd8ynii1b553nn4dmd";
+    fetchSubmodules = true;
+  };
+
+  # fix for case-sensitive filesystems
+  # https://github.com/MCredstoner2004/ImageLOL/issues/1
+  postPatch = ''
+    mv imagelol src
+    substituteInPlace CMakeLists.txt \
+      --replace 'add_subdirectory("imagelol")' 'add_subdirectory("src")'
+  '';
+
+  nativeBuildInputs = [ cmake ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ./ImageLOL $out/bin
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/MCredstoner2004/ImageLOL";
+    description = "Simple program to store a file into a PNG image";
+    license = licenses.mit;
+    maintainers = [ maintainers.ivar ];
+    platforms = platforms.unix;
+  };
+}