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/tools/admin/google-cloud-sdk/update.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p nix
+
+BASE_URL="https://dl.google.com/dl/cloudsdk/channels/rapid/downloads/google-cloud-sdk"
+
+# Version of Google Cloud SDK from
+# https://cloud.google.com/sdk/docs/release-notes
+VERSION="387.0.0"
+
+function genMainSrc() {
+    local url="${BASE_URL}-${VERSION}-${1}-${2}.tar.gz"
+    local sha256
+    sha256=$(nix-prefetch-url "$url")
+    echo "      {"
+    echo "        url = \"${url}\";"
+    echo "        sha256 = \"${sha256}\";"
+    echo "      };"
+}
+
+{
+    cat <<EOF
+# DO NOT EDIT! This file is generated automatically by update.sh
+{ }:
+{
+  version = "${VERSION}";
+  googleCloudSdkPkgs = {
+EOF
+
+    echo "    x86_64-linux ="
+    genMainSrc "linux" "x86_64"
+
+    echo "    x86_64-darwin ="
+    genMainSrc "darwin" "x86_64"
+
+    echo "    aarch64-linux ="
+    genMainSrc "linux" "arm"
+
+    echo "    aarch64-darwin ="
+    genMainSrc "darwin" "arm"
+
+    echo "    i686-linux ="
+    genMainSrc "linux" "x86"
+
+    echo "  };"
+    echo "}"
+
+} >data.nix