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/browsers/microsoft-edge/update.sh

@@ -0,0 +1,50 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p curl gzip
+
+# To update: ./update.sh > default.nix
+
+index_file=$(curl -sL https://packages.microsoft.com/repos/edge/dists/stable/main/binary-amd64/Packages.gz | gzip -dc)
+
+echo "{"
+
+packages=()
+echo "$index_file" | while read -r line; do
+    if [[ "$line" =~ ^Package:[[:space:]]*(.*) ]]; then
+        Package="${BASH_REMATCH[1]}"
+    fi
+    if [[ "$line" =~ ^Version:[[:space:]]*(.*)-([a-zA-Z0-9+.~]*) ]]; then
+        Version="${BASH_REMATCH[1]}"
+        Revision="${BASH_REMATCH[2]}"
+    fi
+    if [[ "$line" =~ ^SHA256:[[:space:]]*(.*) ]]; then
+        SHA256="${BASH_REMATCH[1]}"
+    fi
+
+    if ! [[ "$line" ]]; then
+        found=0
+        for i in "${packages[@]}"; do
+            if [[ "$i" == "$Package" ]]; then
+                found=1
+            fi
+        done
+
+        if (( ! $found )); then
+            channel="${Package##*-}"
+            name="${Package%-${channel}}"
+            cat <<EOF
+  ${channel} = import ./browser.nix {
+    channel = "${channel}";
+    version = "${Version}";
+    revision = "${Revision}";
+    sha256 = "sha256:$(nix-hash --type sha256 --to-base32 ${SHA256})";
+  };
+EOF
+        fi
+
+        packages+=($Package)
+        Package=""
+        Version=""
+    fi
+done
+
+echo "}"