Fix bug adding properties with flatdevtree.c's ft_set_prop()

[Scott Wood]

On Mon, May 14, 2007 at 01:13:57PM +1000, David Gibson wrote:
> This patch corrects ft_set_prop() so that it adds new properties
> before the first subnode, instead of before the END_NODE tag.

Is there any reason not to just insert at the beginning of the node?

-Scott