Previously we only listened for events on the first one to come up, based on
the assumption that there can only be one internal keyboard. The Razer Blade
laptop keyboards come with with multiple event nodes, all looking like a
normal keyboard. The one that comes up first is one for special keys, so
typing on the internal keyboard after a lid switch does not toggle the write
state.
Fix this by allowing for up to 3 keyboard listeners for a lid switch.
https://bugs.freedesktop.org/show_bug.cgi?id=102039
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>