ASoC: davinci-pcm: increase the maximum channels

Based on the registration of davinci-mcasp.1 in the davinci-evm platform
setup for da830 and dm6467, davinci-pcm can handle more than the currently
reported maximum channels of 2.

Increase the maximum channels to 384 to match the maximum reported by
davinci-mcasp.1.
Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Reviewed-by: Steven Faludi <stevenfaludi@nanometrics.ca>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/davinci/davinci-pcm.c

@@ -75,7 +75,7 @@ static struct snd_pcm_hardware pcm_hardware_playback = {
 	.rate_min = 8000,
 	.rate_max = 96000,
 	.channels_min = 2,
-	.channels_max = 2,
+	.channels_max = 384,
 	.buffer_bytes_max = 128 * 1024,
 	.period_bytes_min = 32,
 	.period_bytes_max = 8 * 1024,
@@ -97,7 +97,7 @@ static struct snd_pcm_hardware pcm_hardware_capture = {
 	.rate_min = 8000,
 	.rate_max = 96000,
 	.channels_min = 2,
-	.channels_max = 2,
+	.channels_max = 384,
 	.buffer_bytes_max = 128 * 1024,
 	.period_bytes_min = 32,
 	.period_bytes_max = 8 * 1024,