dev_next_node_by_type
fb = dev_next_node_by_type(fb, "device_type", "display")) {
pci = dev_next_node_by_type(pci, "model", "SUNW,psycho")) {
node = dev_next_node_by_type(root, "name", name);
node = dev_next_node_by_type(root, "device_type", type);
Prom_node *dev_next_node_by_type(Prom_node *root, char *type, char *property);
pnode = dev_next_node_by_type(pnode, "model",