ASoC: patch for the useless 'break' removal in kirkwood

This patch to remove the 'break;', when the 'switch' jumps to
the 'default' branch, the 'return -EINVAL' will be return with
a error number, so the 'break;' code never be run, it is unuseful
and should be removed here.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/kirkwood/kirkwood-i2s.c

@@ -296,7 +296,6 @@ static int kirkwood_i2s_rec_trigger(struct snd_pcm_substream *substream,
 
 	default:
 		return -EINVAL;
-		break;
 	}
 
 	return 0;