[U-Boot] rockchip: rk322x: fix pd_bus hclk/pclk

[Philipp Tomsich]

> The pd_bus hclk/pclk source is pd_bus aclk, not the PLL.
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> 
>  drivers/clk/rockchip/clk_rk322x.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 

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