[PATCH] i2c: Fallback to of_node of parent

[Wolfram Sang]

> +	if (!dev->of_node && dev->parent)
> +		dev->of_node = dev->parent->of_node;
> +

That is not enough. Current drivers could then have the assignment
removed and even more important, this behaviour should be documented.

Regards,

   Wolfram

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