[PATCH V2] ASoC: fsl_ssi: refine ipg clock usage in this module

[Timur Tabi]

Shengjiu Wang wrote:
> +	ret = clk_prepare_enable(ssi_private->clk);
> +	if (ret)
> +		return ret;

Will this work on PowerPC, where ssi_private->clk is always NULL?