Testconfig: Move iOS makespec out of unsupported directory

It will be supported platform from 5.2 onwards. While moving the mkspec
force the stages to succeed until change is adopted in all branches.
.

Change-Id: Ib6e24694876f6dad68d45529dc3d6b9252e3ffea
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>