soc: rockchip: Clean up Kconfig whitespace

There are spaces instead of tabs, and other inconsistent indentation.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220426014545.628100-1-briannorris@chromium.org


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