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/build-support/build-pecl.nix

@@ -0,0 +1,37 @@
+{ stdenv, lib, php, autoreconfHook, fetchurl, re2c }:
+
+{ pname
+, version
+, internalDeps ? [ ]
+, peclDeps ? [ ]
+, buildInputs ? [ ]
+, nativeBuildInputs ? [ ]
+, postPhpize ? ""
+, makeFlags ? [ ]
+, src ? fetchurl {
+    url = "http://pecl.php.net/get/${pname}-${version}.tgz";
+    inherit (args) sha256;
+  }
+, ...
+}@args:
+
+stdenv.mkDerivation (args // {
+  name = "php-${pname}-${version}";
+  extensionName = pname;
+
+  inherit src;
+
+  nativeBuildInputs = [ autoreconfHook re2c ] ++ nativeBuildInputs;
+  buildInputs = [ php ] ++ peclDeps ++ buildInputs;
+
+  makeFlags = [ "EXTENSION_DIR=$(out)/lib/php/extensions" ] ++ makeFlags;
+
+  autoreconfPhase = ''
+    phpize
+    ${postPhpize}
+    ${lib.concatMapStringsSep "\n"
+      (dep: "mkdir -p ext; ln -s ${dep.dev}/include ext/${dep.extensionName}")
+      internalDeps}
+  '';
+  checkPhase = "NO_INTERACTON=yes make test";
+})