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/video/rtmpdump/default.nix

@@ -0,0 +1,59 @@
+{ lib
+, stdenv
+, fetchgit
+, fetchpatch
+, zlib
+, gnutlsSupport ? false
+, gnutls
+, nettle
+, opensslSupport ? true
+, openssl
+}:
+
+assert (gnutlsSupport || opensslSupport);
+
+with lib;
+stdenv.mkDerivation {
+  pname = "rtmpdump";
+  version = "unstable-2019-03-30";
+
+  src = fetchgit {
+    url = "git://git.ffmpeg.org/rtmpdump";
+    # Currently the latest commit is used (a release has not been made since 2011, i.e. '2.4')
+    rev = "c5f04a58fc2aeea6296ca7c44ee4734c18401aa3";
+    sha256 = "07ias612jgmxpam9h418kvlag32da914jsnjsfyafklpnh8gdzjb";
+  };
+
+  patches = [
+    # Fix build with OpenSSL 1.1
+    (fetchpatch {
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-video/rtmpdump/files/rtmpdump-openssl-1.1.patch?id=1e7bef484f96e7647f5f0911d3c8caa48131c33b";
+      sha256 = "1wds98pk8qr7shkfl8k49iirxiwd972h18w84bamiqln29wv6ql1";
+    })
+  ];
+
+  makeFlags = [
+    "prefix=$(out)"
+    "CROSS_COMPILE=${stdenv.cc.targetPrefix}"
+  ]
+    ++ optional gnutlsSupport "CRYPTO=GNUTLS"
+    ++ optional opensslSupport "CRYPTO=OPENSSL"
+    ++ optional stdenv.isDarwin "SYS=darwin"
+    ++ optional stdenv.cc.isClang "CC=clang";
+
+  propagatedBuildInputs = [ zlib ]
+    ++ optionals gnutlsSupport [ gnutls nettle ]
+    ++ optional opensslSupport openssl;
+
+  outputs = [ "out" "dev" ];
+
+  separateDebugInfo = true;
+
+  meta = {
+    description = "Toolkit for RTMP streams";
+    homepage = "https://rtmpdump.mplayerhq.hu/";
+    license = licenses.gpl2;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ codyopel ];
+  };
+}