[Tagging] Amenity parking

[Tobias Knerr]

Martin Koppenhoefer wrote:
> I am not sure whether this was initially only for parkings "on
> surface" (I had thought it would have been for all kind of parkings,
> so also underground and multistorey)

The "surface" default was part of the proposal that introduced the
surface/underground/multi-storey distinction:

http://wiki.openstreetmap.org/wiki/Approved_features/Parking

So imo at least this default should be put back onto the page. We can
discuss whether it should be abolished, but it clearly wasn't just a
later addition.