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/pcg-c/default.nix

@@ -0,0 +1,38 @@
+{ lib, stdenv, fetchzip }:
+
+with lib;
+
+stdenv.mkDerivation rec {
+  version = "0.94";
+  pname = "pcg-c";
+
+  src = fetchzip {
+    url = "http://www.pcg-random.org/downloads/${pname}-${version}.zip";
+    sha256 = "0smm811xbvs03a5nc2668zd0178wnyri2h023pqffy767bpy1vlv";
+  };
+
+  enableParallelBuilding = true;
+
+  patches = [
+    ./prefix-variable.patch
+    ];
+
+  preInstall = ''
+    sed -i s,/usr/local,$out, Makefile
+    mkdir -p $out/lib $out/include
+  '';
+
+  meta = {
+    description = "A family of better random number generators";
+    homepage = "https://www.pcg-random.org/";
+    license = lib.licenses.asl20;
+    longDescription = ''
+      PCG is a family of simple fast space-efficient statistically good
+      algorithms for random number generation. Unlike many general-purpose RNGs,
+      they are also hard to predict.
+    '';
+    platforms = platforms.unix;
+    maintainers = [ maintainers.linus ];
+    broken = stdenv.isi686; # https://github.com/imneme/pcg-c/issues/11
+  };
+}