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/filesystems/djmount/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchurl, pkg-config, fuse }:
+
+stdenv.mkDerivation rec {
+  pname = "djmount";
+  version = "0.71";
+  src = fetchurl {
+    url = "mirror://sourceforge/djmount/${version}/${pname}-${version}.tar.gz";
+    sha256 = "0kqf0cy3h4cfiy5a2sigmisx0lvvsi1n0fbyb9ll5gacmy1b8nxa";
+  };
+
+  postPatch = ''
+    # Taken from https://github.com/pupnp/pupnp/pull/334/files
+    substituteInPlace libupnp/threadutil/inc/ithread.h \
+      --replace \
+        "#define ithread_mutexattr_setkind_np pthread_mutexattr_setkind_np" \
+        '#define ithread_mutexattr_setkind_np pthread_mutexattr_settype'
+  '';
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ fuse ];
+
+  # Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: libupnp/upnp/.libs/libupnp.a(libupnp_la-gena_ctrlpt.o):libupnp/upnp/src/inc/upnpapi.h:163:
+  #     multiple definition of `pVirtualDirList'; libupnp/upnp/.libs/libupnp.a(libupnp_la-upnpapi.o):libupnp/upnp/src/inc/upnpapi.h:163: first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
+  meta = {
+    homepage = "http://djmount.sourceforge.net/";
+    description = "UPnP AV client, mounts as a Linux filesystem the media content of compatible UPnP AV devices";
+    platforms = lib.platforms.linux;
+    maintainers = [ lib.maintainers.jagajaga ];
+    license = lib.licenses.gpl2;
+  };
+}