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/libraries/celt/generic.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, version, src
+, liboggSupport ? true, libogg ? null # if disabled only the library will be built
+, prePatch ? ""
+, ...
+}:
+
+# The celt codec has been deprecated and is now a part of the opus codec
+
+stdenv.mkDerivation {
+  pname = "celt";
+  inherit version;
+
+  inherit src;
+
+  inherit prePatch;
+
+  buildInputs = []
+    ++ lib.optional liboggSupport libogg;
+
+  doCheck = false; # fails
+
+  meta = with lib; {
+    description = "Ultra-low delay audio codec";
+    homepage    = "https://gitlab.xiph.org/xiph/celt"; # http://www.celt-codec.org/ is gone
+    license     = licenses.bsd2;
+    maintainers = with maintainers; [ codyopel raskin ];
+    platforms   = platforms.unix;
+  };
+}