fdt_node_offset_by_phandle
phy = fdt_node_offset_by_phandle(initial_boot_params, phandle);
alt_phy = fdt_node_offset_by_phandle(initial_boot_params, alt_phandle);
int p = fdt_node_offset_by_phandle(initial_boot_params, ph);
ret = fdt_node_offset_by_phandle(fdt, phandle);
int fdt_node_offset_by_phandle(const void *fdt, uint32_t phandle);