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/applications/misc/evtest/default.nix

@@ -0,0 +1,22 @@
+{ lib, stdenv, fetchgit, autoreconfHook, pkg-config, libxml2 }:
+
+stdenv.mkDerivation rec {
+  pname = "evtest";
+  version = "1.35";
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ libxml2 ];
+
+  src = fetchgit {
+    url = "git://anongit.freedesktop.org/${pname}";
+    rev = "refs/tags/${pname}-${version}";
+    sha256 = "sha256-xF2dwjTmTOyZ/kmASYWqKfnvqCjw0OmdNKrNMrjNl5g=";
+  };
+
+  meta = with lib; {
+    description = "Simple tool for input event debugging";
+    license = lib.licenses.gpl2;
+    platforms = platforms.linux;
+    maintainers = [ maintainers.bjornfor ];
+  };
+}