[U-Boot] [U-Boot, 1/8] rockchip: spi: add debug message for delay in CS toggle

[Philipp Tomsich]

> In analysing delays introduced for large SPI reads, the absence of any
> indication when a delay was inserted (to ensure the CS toggling is
> observed by devices) became apparent.
> 
> Add an additional debug-only debug message to record the insertion and
> duration of any delay (note that the debug-message will cause a delay
> on-top of the delay-duration).
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
>  drivers/spi/rk_spi.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 

Applied to u-boot-rockchip, thanks!