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/applications/misc/nrsc5/default.nix

@@ -0,0 +1,53 @@
+{ lib, stdenv, fetchFromGitHub,
+  autoconf, automake, libtool, cmake,
+  rtl-sdr, libao, fftwFloat
+} :
+let
+  src_faad2 = fetchFromGitHub {
+    owner = "dsvensson";
+    repo = "faad2";
+    rev = "b7aa099fd3220b71180ed2b0bc19dc6209a1b418";
+    sha256 = "0pcw2x9rjgkf5g6irql1j4m5xjb4lxj6468z8v603921bnir71mf";
+  };
+
+  version = "1.0";
+
+in stdenv.mkDerivation {
+  pname = "nrsc5";
+  inherit version;
+
+  src = fetchFromGitHub {
+    owner = "theori-io";
+    repo = "nrsc5";
+    rev = "v${version}";
+    sha256 = "09zzh3h1zzf2lwrbz3i7rif2hw36d9ska8irvxaa9lz6xc1y68pg";
+  };
+
+  postUnpack = ''
+    export srcRoot=`pwd`
+    export faadSrc="$srcRoot/faad2-prefix/src/faad2_external"
+    mkdir -p $faadSrc
+    cp -r ${src_faad2}/* $faadSrc
+    chmod -R u+w $faadSrc
+  '';
+
+  postPatch = ''
+    sed -i '/GIT_REPOSITORY/d' CMakeLists.txt
+    sed -i '/GIT_TAG/d' CMakeLists.txt
+    sed -i "s:set (FAAD2_PREFIX .*):set (FAAD2_PREFIX \"$srcRoot/faad2-prefix\"):" CMakeLists.txt
+  '';
+
+  nativeBuildInputs = [ cmake autoconf automake libtool ];
+  buildInputs = [ rtl-sdr libao fftwFloat ];
+
+  cmakeFlags = [ "-DUSE_COLOR=ON" "-DUSE_FAAD2=ON" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/theori-io/nrsc5";
+    description = "HD-Radio decoder for RTL-SDR";
+    platforms = lib.platforms.linux;
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ markuskowa ];
+  };
+}
+