ASoC: correct s6000 I2S clock polarity

According to the data sheet data is clocked out on the falling edge
and latched on the rising edge of the bit clock. While the left sample
is transmitted the word clock line is low.

Signed-off-by: Daniel Glöckner <dg@emlix.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/s6000/s6000-i2s.c b/sound/soc/s6000/s6000-i2s.c
index dcc7904..c5cda18 100644
--- a/sound/soc/s6000/s6000-i2s.c
+++ b/sound/soc/s6000/s6000-i2s.c
@@ -252,10 +252,10 @@
 	}
 
 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
-	case SND_SOC_DAIFMT_IB_IF:
+	case SND_SOC_DAIFMT_NB_NF:
 		w |= S6_I2S_LEFT_FIRST;
 		break;
-	case SND_SOC_DAIFMT_IB_NF:
+	case SND_SOC_DAIFMT_NB_IF:
 		w |= S6_I2S_RIGHT_FIRST;
 		break;
 	default: