pinctrl: nomadik: refactor DT parser to take two paths

We refactor the DT parser to look for either a config or a
function and then look for further nodes and reserve maps,
not the two things mixed up like prior to this patch.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --cc drivers/pinctrl/nomadik/pinctrl-nomadik.c
Simple merge