arm64: dts: allwinner: h5: libretech-all-h3-cc: Tie in CPU OPPs

The Libre Computer ALL-H3-CC H5 variant can work with the standard H5
OPPs. Tie them in to enable CPU frequency scaling.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20200717160053.31191-8-wens@kernel.org