[U-Boot] [U-Boot, 4/8] rockchip: spi: consistently use false/true with rkspi_enable_chip

[Philipp Tomsich]

> While rkspi_enable_chip is called with true/false everywhere else in
> the file, one call site uses '0' to denot 'false'.
> This change this one parameter to 'false' and effects consistency.
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
>  drivers/spi/rk_spi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 

Applied to u-boot-rockchip, thanks!