[U-Boot] [U-Boot, 2/8] rockchip: spi: remove unused code and fields in priv

[Philipp Tomsich]

> Even though the priv-structure and the claim-bus function contain
> logic for 16bit frames and for unidirectional transfer modes, neither
> of these is used anywhere in the driver.
> 
> This removes the unused (as in "has no effect") logic and fields.
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
>  drivers/spi/rk_spi.c | 29 +++--------------------------
>  1 file changed, 3 insertions(+), 26 deletions(-)
> 

Applied to u-boot-rockchip, thanks!