debounce: disable debouncing on the Logitech K400
This is an external keyboard+touchpad but not recognised as touchpad by the kernel so it's in mouse emulation mode. Double-taps are sent with impossibly close timestamps and filtered out by the debouncing code. Since this isn't a real button that can wear out anyway, let's just disable debouncing on this device. https://bugs.freedesktop.org/show_bug.cgi?id=105974 Signed-off-by:Peter Hutterer <peter.hutterer@who-t.net>