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/development/tools/asmfmt/default.nix

@@ -0,0 +1,32 @@
+{ buildGoPackage
+, lib
+, fetchFromGitHub
+}:
+
+buildGoPackage rec {
+  pname = "asmfmt";
+  version = "1.3.2";
+
+  goPackagePath = "github.com/klauspost/asmfmt";
+
+  src = fetchFromGitHub {
+    owner = "klauspost";
+    repo = "asmfmt";
+    rev = "v${version}";
+    sha256 = "sha256-YxIVqPGsqxvOY0Qz4Jw5FuO9IbplCICjChosnHrSCgc=";
+  };
+
+  goDeps = ./deps.nix;
+
+  # This package comes with its own version of goimports, gofmt and goreturns
+  # but these binaries are outdated and are offered by other packages.
+  subPackages = [ "cmd/asmfmt" ];
+
+  meta = with lib; {
+    description = "Go Assembler Formatter";
+    homepage = "https://github.com/klauspost/asmfmt";
+    license = licenses.mit;
+    maintainers = with maintainers; [ kalbasit ];
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+}

pkgs/development/tools/asmfmt/deps.nix

@@ -0,0 +1,20 @@
+[
+  {
+    goPackagePath = "golang.org/x/tools";
+    fetch = {
+      type = "git";
+      url = "https://go.googlesource.com/tools";
+      rev = "3a10b9bf0a52df7e992a8c3eb712a86d3c896c75";
+      sha256 = "19f3dijcc54jnd7458jab2dgpd0gzccmv2qympd9wi8cc8jpnhws";
+    };
+  }
+  {
+    goPackagePath = "sourcegraph.com/sqs/goreturns";
+    fetch = {
+      type = "git";
+      url = "https://github.com/sqs/goreturns";
+      rev = "538ac601451833c7c4449f8431d65d53c1c60e41";
+      sha256 = "0gcplch8zmcgwl6xvcffxg50g3xnf60n7dlqxgn51179qcjr354p";
+    };
+  }
+]