fbdev: sh_mobile_hdmi: modify snd_soc_dai_driver settings

This patch solve below report from Guennadi

> +static struct snd_soc_dai_driver sh_hdmi_dai = {
> +	.name = "sh_mobile_hdmi-hifi",
> +	.playback = {
> +		.stream_name = "Playback",
> +		.channels_min = 1,

Can it actually do mono? Maybe at probe time you could look at audio flags
from your previous patch and, e.g., for SPDIF set channels_min to 2?

> +		.channels_max = 2,

That's the "smallest max," yes. With some other interfaces (I2S, DSD) it
can support up to 8 channels...

> +		.rates = SNDRV_PCM_RATE_8000_48000,

Hm, in the datasheet I see supported frequencies 32kHz to 192kHz. And if
you promise support for multiple frequencies, don't you want to implement
.hw_params? Besides, not all of these frequencies will be available,
depending on your supplied clock and your willingness to implement
downsampling.
Reported-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

drivers/video/sh_mobile_hdmi.c

@@ -249,9 +249,12 @@ static struct snd_soc_dai_driver sh_hdmi_dai = {
 	.name = "sh_mobile_hdmi-hifi",
 	.playback = {
 		.stream_name = "Playback",
-		.channels_min = 1,
-		.channels_max = 2,
-		.rates = SNDRV_PCM_RATE_8000_48000,
+		.channels_min = 2,
+		.channels_max = 8,
+		.rates = SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100  |
+			 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200  |
+			 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |
+			 SNDRV_PCM_RATE_192000,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
 	},
 };