ASoC: cs4270: Remove mono support

According to cs4270 datasheet, there is no reference to mono mode.

Signed-off-by: Fabio Estevam <[email protected]>
Acked-by: Timur Tabi <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index 815b53b..8e47798 100644
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -459,7 +459,7 @@
 	.name = "cs4270-hifi",
 	.playback = {
 		.stream_name = "Playback",
-		.channels_min = 1,
+		.channels_min = 2,
 		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_CONTINUOUS,
 		.rate_min = 4000,
@@ -468,7 +468,7 @@
 	},
 	.capture = {
 		.stream_name = "Capture",
-		.channels_min = 1,
+		.channels_min = 2,
 		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_CONTINUOUS,
 		.rate_min = 4000,