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/shells/dash/default.nix

@@ -0,0 +1,67 @@
+{ lib
+, stdenv
+, buildPackages
+, autoreconfHook
+, fetchurl
+, fetchpatch
+, libedit
+, runCommand
+, dash
+}:
+
+stdenv.mkDerivation rec {
+  pname = "dash";
+  version = "0.5.11.5";
+
+  src = fetchurl {
+    url = "http://gondor.apana.org.au/~herbert/dash/files/${pname}-${version}.tar.gz";
+    sha256 = "sha256-23eBEIkfeTeYXym/I0EP4cXWaVAnYPWE5U4OeynhI70=";
+  };
+
+  hardeningDisable = [ "format" ];
+
+  patches = [
+    (fetchpatch {
+      # Dash executes code when noexec ("-n") is specified
+      # https://www.openwall.com/lists/oss-security/2020/11/11/3
+      url = "https://git.kernel.org/pub/scm/utils/dash/dash.git/patch/?id=29d6f2148f10213de4e904d515e792d2cf8c968e";
+      sha256 = "0aadb7aaaan6jxmi6icv4p5gqx7k510yszaqsa29b5giyxz5l9i1";
+    })
+
+    # aarch64-darwin fix from upstream; remove on next release
+    (fetchpatch {
+      url = "https://git.kernel.org/pub/scm/utils/dash/dash.git/patch/?id=6f6d1f2da03468c0e131fdcbdcfa9771ffca2614";
+      sha256 = "16iz2ylkyhpxqq411ns8pjk8rizh6afhavvsf052wvzsnmmlvfbw";
+    })
+  ];
+
+  strictDeps = true;
+  # configure.ac patched; remove on next release
+  nativeBuildInputs = [ autoreconfHook ];
+
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+  buildInputs = [ libedit ];
+
+  configureFlags = [ "--with-libedit" ];
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    homepage = "http://gondor.apana.org.au/~herbert/dash/";
+    description = "A POSIX-compliant implementation of /bin/sh that aims to be as small as possible";
+    platforms = platforms.unix;
+    license = with licenses; [ bsd3 gpl2 ];
+  };
+
+  passthru = {
+    shellPath = "/bin/dash";
+    tests = {
+      "execute-simple-command" = runCommand "${pname}-execute-simple-command" { } ''
+        mkdir $out
+        ${dash}/bin/dash -c 'echo "Hello World!" > $out/success'
+        [ -s $out/success ]
+        grep -q "Hello World" $out/success
+      '';
+    };
+  };
+}