plugins: hotplug: ensure we always call setup() *after* bootmisc

The bootmisc plugin creates lots of required system directories which
udev, and possibly also mdev, need to operate.  E.g., a system which
has an empty tmpfs for /var need to populate that before we run.

The plugin loader handled this dependency implicitly before, loading all
plugins in alphabetical order.  We should not rely on that for proper
operation.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

plugins/hotplug.c

@@ -90,6 +90,7 @@ static plugin_t plugin = {
 	.hook[HOOK_BASEFS_UP] = {
 		.cb  = setup
 	},
+	.depends = { "bootmisc" },
 };
 
 PLUGIN_INIT(plugin_init)