arm64: dts: allwinner: Correct the model names for Pine64 boards

Correct the model names of a few Pine64 boards and devices, according
to their official names used in the Pine64 wiki and on the official Pine64
website. [1][2][3]  This ensures consistency between the officially used
names and the names in the source code.

[1] https://wiki.pine64.org/wiki/PINE_A64
[2] https://wiki.pine64.org/wiki/PINE_H64
[3] https://pine64.org/devices/



Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Marek Kraus <gamiee@pine64.org>
Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/4a988518e0dba5de3ecfc172a0fa2b0653c00d8b.1716768092.git.dsimic@manjaro.org


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