[U-Boot] [U-Boot, v2, 3/5] rockchip: clk: rk3399: implement set_parent() operation

[Philipp Tomsich <philipp.tomsich@theobroma-systems.com>]

> This implements the (newly added) set_parent() operation for the
> RK3399 with a focus on allowing the RGMII clock parent to be
> configured via the assigned-clock-parents property of the GMAC node.
> 
> This implementation supports only the GMAC (in fact only the RGMII
> clock parent) and allows to set this clock's parent either to the
> internal SCLK_GMAC or to an external clock input (identifiable by it
> providing a 'clock-output-name' of "gmac_clkin").
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
> Tested-by: David Wu <david.wu@rock-chips.com>
> ---
> 
> Changes in v2:
> - Fixed David's email address.
> 
>  drivers/clk/rockchip/clk_rk3399.c | 74 +++++++++++++++++++++++++++++++++++++--
>  1 file changed, 72 insertions(+), 2 deletions(-)
> 

Applied to u-boot-rockchip, thanks!