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/dotnet/dotnetbuildhelpers/placate-paket.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+echo Placating Paket in paket.targets
+find -iname paket.targets -print -exec sed --in-place=bak -e 's,mono --runtime[^<]*,true PAKET PLACATED BY buildDotnetPackage,g' {} \;
+
+echo Just to be sure, replacing Paket executables by empty files.
+find . -iname paket\*.exe \! -size 0 -exec mv -v {} {}.bak \; -exec touch {} \;