[U-Boot] [U-Boot, 2/2] rockchip: clk: rk3368: handle clk_enable requests for GMAC

[Philipp Tomsich]

> Since commit ba1f96672522 ("net: designware: add clock support"), the
> designware GMAC driver enables all referenced clocks. While this is a
> no-op for the RK3368 during boot-up (reset behaviour has all the clock
> gates open anyway), we still need to handle the clock-ids passed in
> the enable op of the clock-driver and return a success.
> 
> This change extends the RK3368 clk driver to:
> (a) provide a enable op
> (b) signals success to the caller when the clocks for the GMAC are
>     enabled (no actual action is necessary as the gates are open
>     after reset)
> 
> References: commit ba1f96672522 ("net: designware: add clock support")
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> Tested-by: Klaus Goger <klaus.goger at theobroma-systems.com>
> ---
> 
>  drivers/clk/rockchip/clk_rk3368.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 

Applied to u-boot-rockchip, thanks!