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/gjo/default.nix

@@ -0,0 +1,25 @@
+{ lib
+, buildGoModule
+, fetchFromGitHub
+}:
+
+buildGoModule rec {
+  pname = "gjo";
+  version = "1.0.3";
+
+  src = fetchFromGitHub {
+    owner = "skanehira";
+    repo = "gjo";
+    rev = version;
+    sha256 = "07halr0jzds4rya6hlvp45bjf7vg4yf49w5q60mch05hk8qkjjdw";
+  };
+
+  vendorSha256 = null;
+
+  meta = with lib; {
+    description = "Small utility to create JSON objects";
+    homepage = "https://github.com/skanehira/gjo";
+    license = licenses.mit;
+    maintainers = with maintainers; [ doronbehar ];
+  };
+}