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/java/canonicalize-jar.nix

@@ -0,0 +1,9 @@
+{ substituteAll, unzip, zip }:
+
+substituteAll {
+  name = "canonicalize-jar";
+  src = ./canonicalize-jar.sh;
+
+  unzip = "${unzip}/bin/unzip";
+  zip = "${zip}/bin/zip";
+}

pkgs/build-support/java/canonicalize-jar.sh

@@ -0,0 +1,29 @@
+# Canonicalize the manifest & repack with deterministic timestamps.
+canonicalizeJar() {
+    local input='' outer=''
+    input="$(realpath -sm -- "$1")"
+    outer="$(pwd)"
+    # -qq: even quieter
+    @unzip@ -qq "$input" -d "$input-tmp"
+    canonicalizeJarManifest "$input-tmp/META-INF/MANIFEST.MF"
+    # Sets all timestamps to Jan 1 1980, the earliest mtime zips support.
+    find -- "$input-tmp" -exec touch -t 198001010000.00 {} +
+    rm "$input"
+    pushd "$input-tmp" 2>/dev/null
+    # -q|--quiet, -r|--recurse-paths
+    # -o|--latest-time: canonicalizes overall archive mtime
+    # -X|--no-extra: don't store platform-specific extra file attribute fields
+    @zip@ -qroX "$outer/tmp-out.jar" . 2> /dev/null
+    popd 2>/dev/null
+    rm -rf "$input-tmp"
+    mv "$outer/tmp-out.jar" "$input"
+}
+
+# See also the Java specification's JAR requirements:
+# https://docs.oracle.com/javase/8/docs/technotes/guides/jar/jar.html#Notes_on_Manifest_and_Signature_Files
+canonicalizeJarManifest() {
+    local input=''
+    input="$(realpath -sm -- "$1")"
+    (head -n 1 "$input" && tail -n +2 "$input" | sort | grep -v '^\s*$') > "$input-tmp"
+    mv "$input-tmp" "$input"
+}