debian/udev.init: Recognize '!' flag with static device lists

To work with kmod 20.

Closes: #780263

debian/changelog

@@ -13,6 +13,10 @@ systemd (215-13) UNRELEASED; urgency=medium
     creation. Fixes creation of static device nodes with kmod 20.
     (Closes: #780263)
 
+  [ Michael Biebl ]
+  * debian/udev.init: Recognize '!' flag with static device lists, to work
+    with kmod 20. (Closes: #780263)
+
   [ Didier Roche ]
   * Ensure PrivateTmp doesn't require tmpfs through tmp.mount, but rather adds
     an After relationship. (Closes: #779902)

debian/udev.init

@@ -95,8 +95,8 @@ make_static_nodes() {
   while read type name mode uid gid age arg; do
     [ -e $name ] && continue
     case "$type" in
-      c|b) mknod -m $mode $name $type $(echo $arg | sed 's/:/ /') ;;
-      d) mkdir $name ;;
+      c|b|c!|b!) mknod -m $mode $name $type $(echo $arg | sed 's/:/ /') ;;
+      d|d!) mkdir $name ;;
       *) echo "unparseable line ($type $name $mode $uid $gid $age $arg)" >&2 ;;
     esac