fdcprobe
int fdcprobe(device_t, cfdata_t, void *);
fdcprobe, fdcattach, NULL, NULL);
static int fdcprobe(device_t, cfdata_t, void *);
fdcprobe, fdcattach, NULL, NULL);
static int fdcprobe(device_t, cfdata_t, void *);
fdcprobe, fdcattach, NULL, NULL);