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/os-specific/linux/klibc/shrunk.nix

@@ -0,0 +1,26 @@
+{stdenv, klibc}:
+
+stdenv.mkDerivation {
+  # !!! For now, the name has to be exactly as long as the original
+  # name due to the sed hackery below.  Once patchelf 0.4 is in the
+  # tree, we can do this properly.
+  #name = "${klibc.name}-shrunk";
+  name = klibc.name;
+  buildCommand = ''
+    mkdir -p $out/lib
+    cp -prd ${klibc.out}/lib/klibc/bin $out/
+    cp -p ${klibc.out}/lib/*.so $out/lib/
+    chmod +w $out/*
+    old=$(echo ${klibc.out}/lib/klibc-*.so)
+    new=$(echo $out/lib/klibc-*.so)
+    for i in $out/bin/*; do
+      echo $i
+      sed "s^$old^$new^" -i $i
+      # !!! use patchelf
+      #patchelf --set-interpreter $new $i
+    done
+  ''; # */
+  allowedReferences = ["out"];
+
+  inherit (klibc) meta;
+}