ALSA: HDA VIA: Remove 48k sample rate limit for S/PDIF

48 kHz limit is for slightly better stability, and sample rates other
than 48k (like 96k/192k) are for better sound quality.
We choose better quality, so remove the 48k limit.
Signed-off-by: Logan Li <loganli@viatech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_via.c

@@ -4626,7 +4626,6 @@ static struct hda_pcm_stream vt1718S_pcm_digital_playback = {
 	.substreams = 2,
 	.channels_min = 2,
 	.channels_max = 2,
-	.rates = SNDRV_PCM_RATE_48000,
 	/* NID is set in via_build_pcms */
 	.ops = {
 		.open = via_dig_playback_pcm_open,
@@ -5124,7 +5123,6 @@ static struct hda_pcm_stream vt1716S_pcm_digital_playback = {
 	.substreams = 2,
 	.channels_min = 2,
 	.channels_max = 2,
-	.rates = SNDRV_PCM_RATE_48000,
 	/* NID is set in via_build_pcms */
 	.ops = {
 		.open = via_dig_playback_pcm_open,
@@ -5561,7 +5559,6 @@ static struct hda_pcm_stream vt2002P_pcm_digital_playback = {
 	.substreams = 1,
 	.channels_min = 2,
 	.channels_max = 2,
-	.rates = SNDRV_PCM_RATE_48000,
 	/* NID is set in via_build_pcms */
 	.ops = {
 		.open = via_dig_playback_pcm_open,
@@ -5914,7 +5911,6 @@ static struct hda_pcm_stream vt1812_pcm_digital_playback = {
 	.substreams = 1,
 	.channels_min = 2,
 	.channels_max = 2,
-	.rates = SNDRV_PCM_RATE_48000,
 	/* NID is set in via_build_pcms */
 	.ops = {
 		.open = via_dig_playback_pcm_open,