ARM: configs: sunxi: Enable Lima

Lima is fairly stable now, so let's enable it by default.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200705091904.42795-7-maxime@cerno.tech


Acked-by: Chen-Yu Tsai <wens@csie.org>