[U-Boot] rockchip: video: mipi: Do not write to the version register

[Philipp Tomsich]

> There was a copy and paste error where the data
> enable setting was written to the version register.
> 
> Signed-off-by: Richard Röjfors <richard at puffinpack.se>
> ---
>  drivers/video/rockchip/rk_mipi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>