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/servers/mjolnir/update.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p curl common-updater-scripts nodePackages.node2nix gnused nix coreutils jq
+
+set -euo pipefail
+
+latestVersion="$(curl -s "https://api.github.com/repos/matrix-org/mjolnir/releases?per_page=1" | jq -r ".[0].tag_name" | sed 's/^v//')"
+currentVersion=$(nix-instantiate --eval -E "with import ./. {}; mjolnir.version or (lib.getVersion mjolnir)" | tr -d '"')
+
+if [[ "$currentVersion" == "$latestVersion" ]]; then
+  echo "mjolnir is up-to-date: $currentVersion"
+  exit 0
+fi
+
+update-source-version mjolnir 0 0000000000000000000000000000000000000000000000000000000000000000
+update-source-version mjolnir "$latestVersion"
+
+# use patched source
+store_src="$(nix-build . -A mjolnir.src --no-out-link)"
+
+cd "$(dirname "${BASH_SOURCE[0]}")"
+
+node2nix \
+  --nodejs-14 \
+  --development \
+  --node-env ./node-env.nix \
+  --output ./node-deps.nix \
+  --input "$store_src/package.json" \
+  --composition ./node-composition.nix
+