rem: void dump_usb_feature_unit_descriptor(int8* data)
add: dump_usb_feature_unit_descriptor(int8 *data)
context: void dump_usb_feature_unit_descriptor(int8* data){	// warning: either doc is out of date, or this & 1325 implementation is wrong on control_size vs bma_controls[] length 	int i, length;	usb_feature_unit_descriptor* fu = (usb_feature_unit_descriptor*)data;	dump_descr(data);	length = data[0];	dprintf("  FEATURE_UNIT\n");	dprintf("    unit_id:        %d\n", fu->unit_id);	dprintf("    source_id:      %d\n", fu->source_id);	dprintf("    control_size:   %d\n", fu->control_size);	if (fu->control_size == 2) {		dprintf("    master bma:     "); 		bma_dec(fu->master_bma_control);		for (i=0; i < fu->control_size; i++) {	 		dprintf("    ch %d bma:       ", i);	 		bma_dec(fu->bma_controls[i]);		}		dprintf("    featurestr: %d\n", fu->feature_string);	} else {		dprintf("    err: unsupported control_size\n");	}}