ASoC: xlnx: enable multi sample rate support for I2S sound card

Patch enables I2S sound card with multiple sampling rates for playback
and capture. Values were based on the PMOD used in audio pipeline.

Signed-off-by: Maruthi Srinivas Bayyavarapu <maruthi.srinivas.bayyavarapu@xilinx.com>
Reviewed-by: Hyun Kwon <hyun.kwon@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

sound/soc/xilinx/xlnx_pl_snd_card.c

@@ -159,10 +159,13 @@ static int xlnx_i2s_card_hw_params(struct snd_pcm_substream *substream,
 		}
 	}
 
+	prv->mclk_val = prv->mclk_ratio * sample_rate;
 	clk_div = DIV_ROUND_UP(prv->mclk_ratio, 2 * ch * data_width);
 	ret = snd_soc_dai_set_clkdiv(cpu_dai, 0, clk_div);
+	if (ret)
+		return ret;
 
-	return ret;
+	return clk_set_rate(prv->mclk, prv->mclk_val);
 }
 
 static const struct snd_soc_ops xlnx_sdi_card_ops = {