- create config parameters for USB depending of the defined number of ports
- removed obsolete comment
- bx_param_num_c flag USE_SPIN_CONTROL now available for all config interfaces
* ported generic hub code from Qemu
* devices can be connected at runtime only with textconfig
* FIXME: wx ParamDialog doesn't like removing runtime parameters on disconnect
* TODO #1: dynanamic runtime dialog for USB on Windows
* TODO #2: code cleanup: USB code should have one static function only for
most of the init_device() code