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/misc/emv/default.nix

@@ -0,0 +1,26 @@
+{ lib, stdenv, fetchurl }:
+
+stdenv.mkDerivation {
+  pname = "emv";
+  version = "1.95";
+
+  src = fetchurl {
+    url = "http://www.i0i0.de/toolchest/emv";
+    sha256 = "7e0e12afa45ef5ed8025e5f2c6deea0ff5f512644a721f7b1b95b63406a8f7ce";
+  };
+
+  dontUnpack = true;
+
+  installPhase = ''
+    mkdir -pv $out/bin
+    cp $src $out/bin/emv
+    chmod +x $out/bin/emv
+  '';
+
+  meta = {
+    homepage = "http://www.i0i0.de/toolchest/emv";
+    description = "Editor Move: Rename files with your favourite text editor";
+    license = lib.licenses.publicDomain;
+    platforms = lib.platforms.unix;
+  };
+}