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/bmrsa/11.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchurl, unzip }:
+
+stdenv.mkDerivation rec {
+  pname = "bmrsa";
+  version = "11";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/bmrsa/bmrsa${version}.zip";
+    sha256 = "0ksd9xkvm9lkvj4yl5sl0zmydp1wn3xhc55b28gj70gi4k75kcl4";
+  };
+
+  nativeBuildInputs = [ unzip ];
+
+  unpackPhase = ''
+    mkdir bmrsa
+    cd bmrsa
+    unzip ${src}
+    sed -e 's/gcc/g++/' -i Makefile
+    mkdir -p $out/bin
+    echo -e 'install:\n\tcp bmrsa '$out'/bin' >> Makefile
+  '';
+
+  meta = with lib; {
+    description = "RSA utility";
+    homepage = "http://bmrsa.sourceforge.net/";
+    license = licenses.gpl1;
+    platforms = platforms.linux;
+  };
+}