[PATCH v3] drivers: clk: make gpio-gated clock support optional

[Stephen Boyd]

Quoting Enrico Weigelt, metux IT consult (2020-12-02 04:34:46)
> The gpio-gate-clock / gpio-mux-clock driver isn't used much,
> just by a few ARM SoCs, so there's no need to always include
> it unconditionally.
> 
> Thus make it optional, but keep it enabled by default.
> 
> changes v3: default to y when gpiolib enabled
>             fix depends on gpiolib to uppercase
> 
> changes v2: added missing dependency on gpiolib
> 
> Signed-off-by: Enrico Weigelt, metux IT consult <info at metux.net>
> ---

Applied to clk-next