[PATCH 0/1] MR6665: winebus: Allow any free device index to be reused immediately.

[Alex Henrie (＠alexhenrie)]

Cars: Mater National Championship expects that when two identical
controllers are connected and then the first controller is unplugged and
plugged back in, it gets the same device index that it had before. If it
gets a different index, the controller does not work until the game is
restarted.

As it stands without this patch, when the last device in the list is
unplugged, its index becomes available for reuse, but if the last device
is never unplugged, none of the indexes of the other devices formerly in
the list can be reused. It doesn't make sense to make all index reuse
depend on the last device. Instead, let's keep the device list sorted by
index and reuse any free index immediately.