ARM: dts: sun8i: a83t: Switch to CCU device tree binding macros

Now that the CCU device tree binding headers have been merged, we can
use the properly named macros in the device tree, instead of raw
numbers.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>