[U-Boot] rockchip: enable SPL_SYSRESET config for all sockchip SoCs

[Philipp Tomsich]

> After the patch below, we need to add SPL_SYSRESET for do_reset()
> in SPL:
> 87c16d4 drivers: spl: consistently use the $(SPL_TPL_) macro
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
>  arch/arm/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 

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