[U-Boot] [U-Boot, v2, 10/19] rockchip: Clarify docs on SPI writing

[Philipp Tomsich]

> We use every second block when creating a SPI image, so update the text to
> say this explicitly.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
> Changes in v2: None
> 
>  doc/README.rockchip | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

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