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/xml/xmlformat/default.nix

@@ -0,0 +1,28 @@
+{ lib, stdenv, fetchurl, perl }:
+stdenv.mkDerivation rec {
+  pname = "xmlformat";
+  version = "1.04";
+
+  src = fetchurl {
+    url = "http://www.kitebird.com/software/xmlformat/xmlformat-${version}.tar.gz";
+    sha256 = "1vwgzn4ha0az7dx0cyc6dx5nywwrx9gxhyh08mvdcq27wjbh79vi";
+  };
+
+  buildInputs = [ perl ];
+  buildPhase = ''
+    patchShebangs ./xmlformat.pl
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ./xmlformat.pl $out/bin/xmlformat
+    cp ./LICENSE $out/
+  '';
+
+  meta = {
+    description = "a configurable formatter (or 'pretty-printer') for XML documents";
+    homepage = "http://www.kitebird.com/software/xmlformat/";
+    license = lib.licenses.bsd3;
+    platforms = lib.platforms.all;
+  };
+}