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/backup/bdsync/default.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchFromGitHub
+, openssl
+, pandoc
+, which
+}:
+
+stdenv.mkDerivation rec {
+  pname = "bdsync";
+  version = "0.11.2";
+
+  src = fetchFromGitHub {
+    owner = "rolffokkens";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0kx422cp1bxr62i1mi7dzrpwmys1kdp865rcymdp4knb5rr5864k";
+  };
+
+  nativeBuildInputs = [ pandoc which ];
+  buildInputs = [ openssl ];
+
+  postPatch = ''
+    patchShebangs ./tests.sh
+    patchShebangs ./tests/
+  '';
+
+  doCheck = true;
+
+  installPhase = ''
+    install -Dm755 bdsync -t $out/bin/
+    install -Dm644 bdsync.1 -t $out/share/man/man1/
+  '';
+
+  meta = with lib; {
+    description = "Fast block device synchronizing tool";
+    homepage = "https://github.com/TargetHolding/bdsync";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ jluttine ];
+  };
+}