Some objects can be created with a local or global scope in a
multiprocessing network. In non-multiprocessing configurations setting
the scope to local or global had no effect since such a system can be
viewed as a multiprocessing network with just one node. One and all
nodes is the same in such a network. However, if multiprocessing was
configured, creation of a global object in a single node network
resulted in an RTEMS_MP_NOT_CONFIGURED error. Remove this error
condition for symmetry to the non-multiprocessing setup. This is in line
with the task affinity behaviour in SMP systems.
Close#4005.