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/tools/misc/xspim/default.nix

@@ -0,0 +1,49 @@
+{ lib, stdenv, fetchsvn, imake, bison, flex, xlibsWrapper, libXaw, libXpm, ... }:
+
+stdenv.mkDerivation rec {
+  pname = "xspim";
+  version = "9.1.22";
+
+  src = fetchsvn {
+    url = "https://svn.code.sf.net/p/spimsimulator/code/";
+    rev = "r739";
+    sha256 = "1kazfgrbmi4xq7nrkmnqw1280rhdyc1hmr82flrsa3g1b1rlmj1s";
+  };
+
+  nativeBuildInputs = [ imake bison flex ];
+  buildInputs = [ xlibsWrapper libXaw libXpm ];
+
+  preConfigure = ''
+    cd xspim
+    xmkmf
+  '';
+
+  makeFlags = [
+    "BIN_DIR=${placeholder "out"}/bin"
+    "EXCEPTION_DIR=${placeholder "out"}/share/spim"
+    "MAN_DIR=${placeholder "out"}/share/man/man1"
+  ];
+
+  doCheck = true;
+  preCheck = ''
+    pushd ../spim
+  '';
+  postCheck = ''
+    popd
+  '';
+
+  preInstall = ''
+    mkdir -p $out/share/spim
+    install -D ../spim/spim $out/bin/spim
+    install -D ../Documentation/spim.man $out/share/man/man1/spim.1
+    install -D ../Documentation/xspim.man $out/share/man/man1/xspim.1
+  '';
+
+  meta = with lib; {
+    description = "A MIPS32 simulator";
+    homepage = "http://spimsimulator.sourceforge.net/";
+    license = licenses.bsdOriginal;
+    maintainers = with maintainers; [ emilytrau ];
+    platforms = platforms.linux;
+  };
+}