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/applications/networking/cluster/linkerd/update-edge.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl gnugrep gnused jq
+
+set -x -eu -o pipefail
+
+cd $(dirname "$0")
+
+VERSION=$(curl ${GITHUB_TOKEN:+" -u \":$GITHUB_TOKEN\""} \
+    --silent https://api.github.com/repos/linkerd/linkerd2/releases | \
+    jq 'map(.tag_name)' | grep edge | sed 's/["|,| ]//g' | sed 's/edge-//' | sort -V -r | head -n1)
+
+SHA256=$(nix-prefetch-url --quiet --unpack https://github.com/linkerd/linkerd2/archive/refs/tags/edge-${VERSION}.tar.gz)
+
+setKV () {
+    sed -i "s|$1 = \".*\"|$1 = \"${2:-}\"|" ./edge.nix
+}
+
+setKV version ${VERSION}
+setKV sha256 ${SHA256}
+setKV vendorSha256 "0000000000000000000000000000000000000000000000000000" # Necessary to force clean build.
+
+cd ../../../../../
+set +e
+VENDOR_SHA256=$(nix-build --no-out-link -A linkerd_edge 2>&1 >/dev/null | grep "got:" | cut -d':' -f2 | sed 's| ||g')
+set -e
+cd - > /dev/null
+
+if [ -n "${VENDOR_SHA256:-}" ]; then
+    setKV vendorSha256 ${VENDOR_SHA256}
+else
+    echo "Update failed. VENDOR_SHA256 is empty."
+    exit 1
+fi