ASoC: tlv320aic31xx: do not declare support for mono DAI

This hardware supports only 2-channel DAI, even mono ADC digital output
has two channels with the same data.

Having min_channels=1 results in broken playback of mono files in setups
where CPU DAI supports mono.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/tlv320aic31xx.c b/sound/soc/codecs/tlv320aic31xx.c
index 725173b..be1a64b 100644
--- a/sound/soc/codecs/tlv320aic31xx.c
+++ b/sound/soc/codecs/tlv320aic31xx.c
@@ -1213,7 +1213,7 @@
 		.name = "tlv32dac31xx-hifi",
 		.playback = {
 			.stream_name	 = "Playback",
-			.channels_min	 = 1,
+			.channels_min	 = 2,
 			.channels_max	 = 2,
 			.rates		 = AIC31XX_RATES,
 			.formats	 = AIC31XX_FORMATS,
@@ -1228,14 +1228,14 @@
 		.name = "tlv320aic31xx-hifi",
 		.playback = {
 			.stream_name	 = "Playback",
-			.channels_min	 = 1,
+			.channels_min	 = 2,
 			.channels_max	 = 2,
 			.rates		 = AIC31XX_RATES,
 			.formats	 = AIC31XX_FORMATS,
 		},
 		.capture = {
 			.stream_name	 = "Capture",
-			.channels_min	 = 1,
+			.channels_min	 = 2,
 			.channels_max	 = 2,
 			.rates		 = AIC31XX_RATES,
 			.formats	 = AIC31XX_FORMATS,