[PATCH 08/13] dt-bindings: net: document ptp_ref clk in dwmac

[Rob Herring]

On Thu, 15 Apr 2021 12:10:32 +0200, Alexandre Torgue wrote:
> ptp_ref clk has been added in DT but not documented which makes yaml
> validation failed:
> 
> ethernet at 5800a000: clocks: [[6, 105], [6, 103], [6, 104], [6, 123],
> [6, 169], [6, 112]] is too long
> ethernet at 5800a000: clock-names: ['stmmaceth', 'mac-clk-tx', 'mac-clk-rx',
> 'eth-ck', 'ptp_ref', 'ethstp'] is too long
> 
> Signed-off-by: Alexandre Torgue <alexandre.torgue at foss.st.com>
> 

Reviewed-by: Rob Herring <robh at kernel.org>