ALSA: ASoC: tlv320aic3x add dsp_a

Add SND_SOC_DAIFMT_DSP_A mode option.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/tlv320aic3x.h b/sound/soc/codecs/tlv320aic3x.h
index 73e35b6..ac827e5 100644
--- a/sound/soc/codecs/tlv320aic3x.h
+++ b/sound/soc/codecs/tlv320aic3x.h
@@ -35,6 +35,8 @@
 #define AIC3X_ASD_INTF_CTRLA		8
 /* Audio serial data interface control register B */
 #define AIC3X_ASD_INTF_CTRLB		9
+/* Audio serial data interface control register C */
+#define AIC3X_ASD_INTF_CTRLC		10
 /* Audio overflow status and PLL R value programming register */
 #define AIC3X_OVRF_STATUS_AND_PLLR_REG	11
 /* Audio codec digital filter control register */