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/tools/analysis/smatch/default.nix

@@ -0,0 +1,39 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, pkg-config
+, sqlite
+, openssl
+, buildllvmsparse ? false
+, buildc2xml ? false
+, libllvm
+, libxml2
+}:
+
+stdenv.mkDerivation rec {
+  pname = "smatch";
+  version = "1.72";
+
+  src = fetchFromGitHub {
+    owner = "error27";
+    repo = "smatch";
+    rev = version;
+    sha256 = "sha256-XVW4sAgIxaJjAk75bp/O286uddIfgfKtIA2LniUGWBM=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ sqlite openssl ]
+    ++ lib.optionals buildllvmsparse [ libllvm ]
+    ++ lib.optionals buildc2xml [ libxml2.dev ];
+
+  makeFlags = [ "PREFIX=${placeholder "out"}" "CXX=${stdenv.cc.targetPrefix}c++" ];
+
+  meta = with lib; {
+    description = "A semantic analysis tool for C";
+    homepage = "http://smatch.sourceforge.net/";
+    maintainers = with maintainers; [ marsam ];
+    license = licenses.gpl2Plus;
+    platforms = platforms.all;
+  };
+}