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/interpreters/tcl/mk-tcl-derivation.nix

@@ -0,0 +1,69 @@
+# Generic builder for tcl packages/applications, generally based on mk-python-derivation.nix
+{ tcl
+, lib
+, makeWrapper
+, runCommand
+, writeScript
+}:
+
+{ buildInputs ? []
+, nativeBuildInputs ? []
+, propagatedBuildInputs ? []
+, checkInputs ? []
+
+# true if we should skip the configuration phase altogether
+, dontConfigure ? false
+
+# Extra flags passed to configure step
+, configureFlags ? []
+
+# Whether or not we should add common Tcl-related configure flags
+, addTclConfigureFlags ? true
+
+, meta ? {}
+, passthru ? {}
+, doCheck ? true
+, ... } @ attrs:
+
+let
+  inherit (tcl) stdenv;
+  inherit (lib) getBin optionalAttrs optionals;
+
+  defaultTclPkgConfigureFlags = [
+    "--with-tcl=${tcl}/lib"
+    "--with-tclinclude=${tcl}/include"
+    "--exec-prefix=${placeholder "out"}"
+  ];
+
+  self = (stdenv.mkDerivation ((builtins.removeAttrs attrs [
+    "addTclConfigureFlags" "checkPhase" "checkInputs" "doCheck"
+  ]) // {
+
+    buildInputs = buildInputs ++ [ tcl.tclPackageHook ];
+    nativeBuildInputs = nativeBuildInputs ++ [ makeWrapper tcl ];
+    propagatedBuildInputs = propagatedBuildInputs ++ [ tcl ];
+
+    TCLSH = "${getBin tcl}/bin/tclsh";
+
+    # Run tests after install, at which point we've done all TCLLIBPATH setup
+    doCheck = false;
+    doInstallCheck = attrs.doCheck or ((attrs ? doInstallCheck) && attrs.doInstallCheck);
+    installCheckInputs = checkInputs ++ (optionals (attrs ? installCheckInputs) attrs.installCheckInputs);
+
+    # Add typical values expected by TEA for configureFlags
+    configureFlags =
+      if (!dontConfigure && addTclConfigureFlags)
+        then (configureFlags ++ defaultTclPkgConfigureFlags)
+        else configureFlags;
+
+    meta = {
+      platforms = tcl.meta.platforms;
+    } // meta;
+
+
+  } // optionalAttrs (attrs?checkPhase) {
+    installCheckPhase = attrs.checkPhase;
+  }
+  ));
+
+in lib.extendDerivation true passthru self