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/dashing/default.nix

@@ -0,0 +1,26 @@
+{ lib, buildGoPackage, fetchFromGitHub }:
+
+buildGoPackage rec {
+  pname = "dashing";
+  version = "0.4.0";
+
+  goPackagePath = "github.com/technosophos/dashing";
+
+  src = fetchFromGitHub {
+    owner = "technosophos";
+    repo = pname;
+    rev = version;
+    sha256 = "0mhv0w5q5vpynbfi21n5i3yw2165bppdlg0amvbv86n9z4c21h89";
+  };
+
+  goDeps = ./deps.nix;
+
+  ldflags = [ "-X main.version=${version}" ];
+
+  meta = with lib; {
+    description = "A Dash Generator Script for Any HTML";
+    homepage    = "https://github.com/technosophos/dashing";
+    license     = licenses.mit;
+    maintainers = [ ];
+  };
+}