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/security/pinentry/mac.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchFromGitHub, xcbuildHook, libiconv, ncurses, Cocoa }:
+
+stdenv.mkDerivation {
+  pname = "pinentry-mac";
+  version = "0.9.4";
+
+  src = fetchFromGitHub {
+    owner = "matthewbauer";
+    repo = "pinentry-mac";
+    rev = "6dfef256c8ea32d642fea847f27d800f024cf51e";
+    sha256 = "0g75302697gqcxyf2hyqzvcbd5pyss1bl2xvfd40wqav7dlyvj83";
+  };
+
+  nativeBuildInputs = [ xcbuildHook ];
+  buildInputs = [ libiconv ncurses Cocoa ];
+
+  preBuild = ''
+    # Only build for what we care about (also allows arm64)
+    substituteInPlace pinentry-mac.xcodeproj/project.pbxproj \
+      --replace "i386 x86_64 ppc" "${stdenv.targetPlatform.darwinArch}"
+  '';
+
+  installPhase = ''
+    mkdir -p $out/Applications
+    mv Products/Release/pinentry-mac.app $out/Applications
+  '';
+
+  passthru = {
+    binaryPath = "Applications/pinentry-mac.app/Contents/MacOS/pinentry-mac";
+  };
+
+  meta = {
+    description = "Pinentry for GPG on Mac";
+    license = lib.licenses.gpl2Plus;
+    homepage = "https://github.com/GPGTools/pinentry-mac";
+    platforms = lib.platforms.darwin;
+  };
+}