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/levmar/default.nix

@@ -0,0 +1,30 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  pname = "levmar";
+  version = "2.6";
+
+  src = fetchurl {
+    url = "https://www.ics.forth.gr/~lourakis/levmar/${pname}-${version}.tgz";
+    sha256 = "1mxsjip9x782z6qa6k5781wjwpvj5aczrn782m9yspa7lhgfzx1v";
+  };
+
+  patchPhase = ''
+    substituteInPlace levmar.h --replace "define HAVE_LAPACK" "undef HAVE_LAPACK"
+    sed -i 's/LAPACKLIBS=.*/LAPACKLIBS=/' Makefile
+    substituteInPlace Makefile --replace "gcc" "${stdenv.cc.targetPrefix}cc"
+  '';
+
+  installPhase = ''
+    mkdir -p $out/include $out/lib
+    cp lm.h $out/include
+    cp liblevmar.a $out/lib
+  '';
+
+  meta = {
+    description = "ANSI C implementations of Levenberg-Marquardt, usable also from C++";
+    homepage = "https://www.ics.forth.gr/~lourakis/levmar/";
+    license = lib.licenses.gpl2Plus;
+    platforms = lib.platforms.all;
+  };
+}