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/modules/services/networking/hylafax/faxq-wait.sh

@@ -0,0 +1,29 @@
+#! @runtimeShell@ -e
+
+# skip this if there are no modems at all
+if ! stat -t "@spoolAreaPath@"/etc/config.* >/dev/null 2>&1
+then
+  exit 0
+fi
+
+echo "faxq started, waiting for modem(s) to initialize..."
+
+for i in `seq @timeoutSec@0 -1 0`  # gracefully timeout
+do
+  sleep 0.1
+  # done if status files exist, but don't mention initialization
+  if \
+    stat -t "@spoolAreaPath@"/status/* >/dev/null 2>&1 \
+    && \
+    ! grep --silent --ignore-case 'initializing server' \
+    "@spoolAreaPath@"/status/*
+  then
+    echo "modem(s) apparently ready"
+    exit 0
+  fi
+  # if i reached 0, modems probably failed to initialize
+  if test $i -eq 0
+  then
+    echo "warning: modem initialization timed out"
+  fi
+done