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/test/make-binary-wrapper/default.nix

@@ -0,0 +1,61 @@
+{ lib
+, stdenv
+, pkgsCross
+, makeBinaryWrapper
+, writeText
+, runCommand
+, runCommandCC
+}:
+
+let
+  env = { nativeBuildInputs = [ makeBinaryWrapper ]; };
+  envCheck = runCommandCC "envcheck" env ''
+    cc -Wall -Werror -Wpedantic -o $out ${./envcheck.c}
+  '';
+  makeGoldenTest = testname: runCommand "make-binary-wrapper-test-${testname}" env ''
+    mkdir -p tmp/foo # for the chdir test
+
+    params=$(<"${./.}/${testname}.cmdline")
+    eval "makeCWrapper /send/me/flags $params" > wrapper.c
+
+    diff wrapper.c "${./.}/${testname}.c"
+
+    if [ -f "${./.}/${testname}.env" ]; then
+      eval "makeWrapper ${envCheck} wrapped $params"
+      env -i ./wrapped > env.txt
+      sed "s#SUBST_ARGV0#${envCheck}#;s#SUBST_CWD#$PWD#" \
+        "${./.}/${testname}.env" > golden-env.txt
+      if ! diff env.txt golden-env.txt; then
+        echo "env/argv should be:"
+        cat golden-env.txt
+        echo "env/argv output is:"
+        cat env.txt
+        exit 1
+      fi
+    else
+      # without a golden env, we expect the wrapper compilation to fail
+      ! eval "makeWrapper ${envCheck} wrapped $params" &> error.txt
+    fi
+
+    cp wrapper.c $out
+  '';
+  tests = lib.genAttrs [
+    "add-flags"
+    "argv0"
+    "basic"
+    "chdir"
+    "combination"
+    "env"
+    "inherit-argv0"
+    "invalid-env"
+    "overlength-strings"
+    "prefix"
+    "suffix"
+  ] makeGoldenTest // lib.optionalAttrs (! stdenv.isDarwin) {
+    cross = pkgsCross.aarch64-multiplatform.callPackage ./cross.nix { };
+  };
+in
+
+writeText "make-binary-wrapper-tests" ''
+  ${lib.concatStringsSep "\n" (builtins.attrValues tests)}
+'' // tests