QNX: Fake rfcomm ports

We need a way to associate a service with a server. The current API does that using rfcomm ports.
On QNX We do not have access to the rfcomm ports, so we fake the behavior.

Change-Id: I893fd60dc4cbc515643fe8218532de6634a6d88e
Reviewed-by: Alex <alexander.blasche@digia.com>
QNX: Properly supporting SPP services with a service name

Change-Id: I1cdbc61e4fc6bcb7b620ba828e802cc4b448830f
Reviewed-by: Alex <alexander.blasche@digia.com>