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>

nixos/maintainers/scripts/gce/create-gce.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p google-cloud-sdk
+
+set -euo pipefail
+
+BUCKET_NAME="${BUCKET_NAME:-nixos-cloud-images}"
+TIMESTAMP="$(date +%Y%m%d%H%M)"
+export TIMESTAMP
+
+nix-build '<nixpkgs/nixos/lib/eval-config.nix>' \
+   -A config.system.build.googleComputeImage \
+   --arg modules "[ <nixpkgs/nixos/modules/virtualisation/google-compute-image.nix> ]" \
+   --argstr system x86_64-linux \
+   -o gce \
+   -j 10
+
+img_path=$(echo gce/*.tar.gz)
+img_name=${IMAGE_NAME:-$(basename "$img_path")}
+img_id=$(echo "$img_name" | sed 's|.raw.tar.gz$||;s|\.|-|g;s|_|-|g')
+img_family=$(echo "$img_id" | cut -d - -f1-4)
+
+if ! gsutil ls "gs://${BUCKET_NAME}/$img_name"; then
+  gsutil cp "$img_path" "gs://${BUCKET_NAME}/$img_name"
+  gsutil acl ch -u AllUsers:R "gs://${BUCKET_NAME}/$img_name"
+
+  gcloud compute images create \
+    "$img_id" \
+    --source-uri "gs://${BUCKET_NAME}/$img_name" \
+    --family="$img_family"
+
+  gcloud compute images add-iam-policy-binding \
+    "$img_id" \
+    --member='allAuthenticatedUsers' \
+    --role='roles/compute.imageUser'
+fi