board: bcm96846: Switch to using OF_UPSTREAM

This board clearly develops first in Linux which had more
hardware listed, so let's start to use OF_UPSTREAM.
This makes the NAND driver work.

Suggested-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
4 files changed