[U-Boot] [U-Boot,1/3] dtoc: Adjust Node to record its parent

[Philipp Tomsich]

On Mon, 19 Jun 2017, Simon Glass wrote:

> We need to be able to search back up the tree for #address-cells and
> #size-cells. Record the parent of each node to make this easier.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
Tested-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>