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/mobile/xpwn/default.nix

@@ -0,0 +1,39 @@
+{ lib, stdenv, fetchFromGitHub, cmake, zlib, libpng, bzip2, libusb-compat-0_1, openssl }:
+
+stdenv.mkDerivation rec {
+  pname = "xpwn";
+  version = "0.5.8git";
+
+  src = fetchFromGitHub {
+    owner = "planetbeing";
+    repo = pname;
+    rev = "ac362d4ffe4d0489a26144a1483ebf3b431da899";
+    sha256 = "1qw9vbk463fpnvvvfgzxmn9add2p30k832s09mlycr7z1hrh3wyf";
+  };
+
+  # Workaround build failure on -fno-common toolchains:
+  #   ld: ../ipsw-patch/libxpwn.a(libxpwn.c.o):(.bss+0x4): multiple definition of
+  #     `endianness'; CMakeFiles/xpwn-bin.dir/src/xpwn.cpp.o:(.bss+0x0): first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
+  preConfigure = ''
+    rm BUILD # otherwise `mkdir build` fails on case insensitive file systems
+    sed -r -i \
+      -e 's/(install.*TARGET.*DESTINATION )\.\)/\1bin)/' \
+      -e 's!(install.*(FILE|DIR).*DESTINATION )([^)]*)!\1share/xpwn/\3!' \
+      */CMakeLists.txt
+    sed -i -e '/install/d' CMakeLists.txt
+  '';
+
+  strictDeps = true;
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ zlib libpng bzip2 libusb-compat-0_1 openssl ];
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    homepage    = "http://planetbeing.lighthouseapp.com/projects/15246-xpwn";
+    description = "Custom NOR firmware loader/IPSW generator for the iPhone";
+    license     = licenses.gpl3Plus;
+    platforms   = with platforms; linux ++ darwin;
+  };
+}