ARM: rockchip: fix typos in comments

Various spelling mistakes in comments.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Link: https://lore.kernel.org/r/20220318103729.157574-32-Julia.Lawall@inria.fr


Signed-off-by: Heiko Stuebner <heiko@sntech.de>