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/setup-hooks/canonicalize-jars.sh

@@ -0,0 +1,17 @@
+# This setup hook causes the fixup phase to repack all JAR files in a
+# canonical & deterministic fashion, e.g. resetting mtimes (like with normal
+# store files) and avoiding impure metadata.
+
+fixupOutputHooks+=('if [ -z "$dontCanonicalizeJars" -a -e "$prefix" ]; then canonicalizeJarsIn "$prefix"; fi')
+
+canonicalizeJarsIn() {
+  local dir="$1"
+  header "canonicalizing jars in $dir"
+  dir="$(realpath -sm -- "$dir")"
+  while IFS= read -rd '' f; do
+    canonicalizeJar "$f"
+  done < <(find -- "$dir" -type f -name '*.jar' -print0)
+  stopNest
+}
+
+source @canonicalize_jar@