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/development/libraries/libdmtx/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+}:
+
+stdenv.mkDerivation rec {
+  pname = "libdmtx";
+  version = "0.7.5";
+
+  src = fetchFromGitHub {
+    owner = "dmtx";
+    repo = "libdmtx";
+    rev = "v${version}";
+    sha256 = "0wk3fkxzf9ip75v8ia54v6ywx72ajp5s6777j4ay8barpbv869rj";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+
+  meta = {
+    description = "An open source software for reading and writing Data Matrix barcodes";
+    homepage = "https://github.com/dmtx/libdmtx";
+    changelog = "https://github.com/dmtx/libdmtx/blob/v${version}/ChangeLog";
+    platforms = lib.platforms.all;
+    maintainers = [ ];
+    license = lib.licenses.bsd2;
+  };
+}