[PATCH v2 2/2] xinput1_3: Register for device notifications to update controller list.

[Rémi Bernon]

Ah nevermind, this still breaks the tests as it prevents the DLL to be 
unloaded. Let's forget about this patch for now.

First patch should be alright though.
-- 
Rémi Bernon <rbernon at codeweavers.com>