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/wabt/default.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchFromGitHub, cmake }:
+
+stdenv.mkDerivation rec {
+  pname = "wabt";
+  version = "1.0.28";
+
+  src = fetchFromGitHub {
+    owner = "WebAssembly";
+    repo = "wabt";
+    rev = version;
+    sha256 = "sha256-nNR2r8jiS0XKru6IdSeTDeCp1izO0xORiupJRa+fhHY=";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ cmake ];
+  cmakeFlags = [ "-DBUILD_TESTS=OFF" "-DCMAKE_PROJECT_VERSION=${version}" ];
+
+  meta = with lib; {
+    description = "The WebAssembly Binary Toolkit";
+    longDescription = ''
+      WABT (pronounced "wabbit") is a suite of tools for WebAssembly, including:
+       * wat2wasm: translate from WebAssembly text format to the WebAssembly
+         binary format
+       * wasm2wat: the inverse of wat2wasm, translate from the binary format
+         back to the text format (also known as a .wat)
+       * wasm-objdump: print information about a wasm binary. Similiar to
+         objdump.
+       * wasm-interp: decode and run a WebAssembly binary file using a
+         stack-based interpreter
+       * wat-desugar: parse .wat text form as supported by the spec interpreter
+         (s-expressions, flat syntax, or mixed) and print "canonical" flat
+         format
+       * wasm2c: convert a WebAssembly binary file to a C source and header
+    '';
+    homepage = "https://github.com/WebAssembly/wabt";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ ekleog ];
+    platforms = platforms.unix;
+  };
+}