V4L/DVB (6067): cx88-alsa: Hardware doesn't support mono audio

channels_min should be 2, not 1.  The hardware only supports stereo.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/cx88/cx88-alsa.c

@@ -335,7 +335,7 @@ static struct snd_pcm_hardware snd_cx88_digital_hw = {
 	.rates =		SNDRV_PCM_RATE_48000,
 	.rate_min =		48000,
 	.rate_max =		48000,
-	.channels_min = 1,
+	.channels_min = 2,
 	.channels_max = 2,
 	.buffer_bytes_max = (2*2048),
 	.period_bytes_min = 2048,