ASoC: codecs: wsa881x: add missing stream rates and format

Add missing supported rates and formats for the stream, without
which attempt to do playback will fail to find any matching rates/format.

Fixes: a0aab9e ("ASoC: codecs: add wsa881x amplifier support")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20201022130518.31723-1-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wsa881x.c

@@ -1026,6 +1026,8 @@ static struct snd_soc_dai_driver wsa881x_dais[] = {
 		.id = 0,
 		.playback = {
 			.stream_name = "SPKR Playback",
+			.rates = SNDRV_PCM_RATE_48000,
+			.formats = SNDRV_PCM_FMTBIT_S16_LE,
 			.rate_max = 48000,
 			.rate_min = 48000,
 			.channels_min = 1,