void nutscan_add_option_to_device(nutscan_device_t * device,char * option_name, char * value);
The nutscan_device_t contains the following variables:
nutscan_device_type_t type; char * driver; char * port; nutscan_options_t opt; struct nutscan_device * prev; struct nutscan_device * next;
This is a double linked list of device. Each device is described by its type, its driver name, its port and any number of optional data.
The nutscan_add_option_to_device() adds an optional data in the given devcie. Optional data are made of an option_name and an associated value. Copies of option_name and value are stored in the device, so the caller can safely free both of them.