[PATCH] dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI

[Stephen Boyd]

Quoting Zong Li (2020-11-25 19:00:43)
> Add YAML DT binding documentation for the SiFive FU740 PRCI. The
> link of unmatched board as follow, the U740-C000 manual would be present
> in the same page later.
> 
>     https://www.sifive.com/boards/hifive-unmatched
> 
> Passes dt_binding_check.
> 
> Signed-off-by: Zong Li <zong.li at sifive.com>
> ---

Applied to clk-next