ARM: dts: sun8i: v40: bananapi-m2-berry: Enable AHCI

Just like the Bananapi M2 Ultra, enable the ahci controller and
the two regulators needed to activate it.

Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Pablo Greco <pgreco@centosproject.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>