fdt_setprop_inplace_var
#ifndef fdt_setprop_inplace_var
err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-start", fdt_val64);
err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-size", fdt_val32);
err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-size", fdt_val32);
err = fdt_setprop_inplace_var(fdt, node, "linux,uefi-mmap-desc-ver", fdt_val32);