fdt_get_property_w
alt_prop = fdt_get_property_w(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
prop = fdt_get_property_w(fdt, nodeoffset, name, &oldlen);
prop = fdt_get_property_w(fdt, nodeoffset, name, &len);
prop = fdt_get_property_w(fdt, nodeoffset, name, &len);