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/arb/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, mpir
+, gmp
+, mpfr
+, flint
+}:
+
+stdenv.mkDerivation rec {
+  pname = "arb";
+  version = "2.22.1";
+
+  src = fetchFromGitHub {
+    owner = "fredrik-johansson";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-Xd3dy7zr4i3pULLFOYtedpS5Yj9Ljwyu6r4kfhRynmE=";
+  };
+
+  buildInputs = [ mpir gmp mpfr flint ];
+
+  configureFlags = [
+    "--with-gmp=${gmp}"
+    "--with-mpir=${mpir}"
+    "--with-mpfr=${mpfr}"
+    "--with-flint=${flint}"
+  ];
+
+  enableParallelBuilding = true;
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "A library for arbitrary-precision interval arithmetic";
+    homepage = "https://arblib.org/";
+    license = licenses.lgpl21Plus;
+    maintainers = teams.sage.members;
+    platforms = platforms.unix;
+  };
+}