As far as pier served stands are concerned, Stands 11 and 13 will take the A380 in terms of size however FEGP and air bridge support is not up to the standard that airlines would want for regular services. These issues could be resolved of course.
The other issue is taxiway network. There is only one route from the Alpha cull de sac to the 22 runway (via Taxiway H)
whilst you could get there via Taxiway J, it would require the stands on the end of Sat 1 and potentially Sat 2 to be restricted or free when Taxiway H was not available which would put considerable strain on operations. This is the main reason why regular A380 operations are not currently available