ARM: dts: sun7i: olimex-lime2: Enable ac and power supplies

Lime2 has battery connector so enable these supplies.

Signed-off-by: Priit Laes <plaes@plaes.org>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>