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/applications/audio/aucatctl/default.nix

@@ -0,0 +1,37 @@
+{ lib, stdenv, fetchurl, sndio, libbsd }:
+
+stdenv.mkDerivation rec {
+  pname = "aucatctl";
+  version = "0.1";
+
+  src = fetchurl {
+    url = "http://www.sndio.org/${pname}-${version}.tar.gz";
+    sha256 = "524f2fae47db785234f166551520d9605b9a27551ca438bd807e3509ce246cf0";
+  };
+
+  buildInputs = [ sndio ]
+    ++ lib.optional (!stdenv.isDarwin && !stdenv.targetPlatform.isBSD)
+    libbsd;
+
+  outputs = [ "out" "man" ];
+
+  preBuild = ''
+    makeFlagsArray+=("PREFIX=$out")
+  '' + lib.optionalString
+    (!stdenv.isDarwin && !stdenv.targetPlatform.isBSD) ''
+      makeFlagsArray+=(LDADD="-lsndio -lbsd")
+
+      # Fix warning about implicit declaration of function 'strlcpy'
+      substituteInPlace aucatctl.c \
+        --replace '#include <string.h>' '#include <bsd/string.h>'
+    '';
+
+  meta = with lib; {
+    description =
+      "The aucatctl utility sends MIDI messages to control sndiod and/or aucat volumes";
+    homepage = "http://www.sndio.org";
+    license = licenses.isc;
+    maintainers = with maintainers; [ sna ];
+    platforms = platforms.unix;
+  };
+}