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/text/jsawk/default.nix

@@ -0,0 +1,28 @@
+{ lib, stdenv, fetchFromGitHub, makeWrapper, spidermonkey_78 }:
+
+stdenv.mkDerivation {
+  pname = "jsawk";
+  version = "1.5-pre";
+  src = fetchFromGitHub {
+    owner = "micha";
+    repo = "jsawk";
+    rev = "5a14c4af3c7b59807701b70a954ecefc6f77e978";
+    sha256 = "0z3vdr3c8nvdrrxkjv9b4xg47mdb2hsknxpimw6shgwbigihapyr";
+  };
+  dontBuild = true;
+  nativeBuildInputs = [ makeWrapper ];
+  installPhase = ''
+    mkdir -p $out/bin
+    cp $src/jsawk $out/bin/
+    wrapProgram $out/bin/jsawk \
+      --prefix PATH : "${spidermonkey_78}/bin"
+  '';
+
+  meta = {
+    description = "Like awk, but for JSON";
+    homepage = "https://github.com/micha/jsawk";
+    license = lib.licenses.publicDomain;
+    maintainers = with lib.maintainers; [ puffnfresh ];
+    platforms = lib.platforms.unix;
+  };
+}