ASoC: sta32x: Optimize the array work to find rate_min and rate_max

For a given ir and fs, there is at most one possible match for the case
mclk_ratios[ir][j].ratio * fs == freq.
Thus we can break from the inner loop once a match is found.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/sta32x.c

@@ -522,6 +522,7 @@ static int sta32x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 						rate_min = fs;
 					if (fs > rate_max)
 						rate_max = fs;
+					break;
 				}
 			}
 		}