ASoC: mchp-spdiftx: remove 'TX' from playback stream name

Do not include the 'TX' in the stream name since it's obvious for
playback.
Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20201009123527.2770629-1-codrin.ciubotariu@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/atmel/mchp-spdiftx.c

@@ -744,7 +744,7 @@ static struct snd_soc_dai_driver mchp_spdiftx_dai = {
 	.probe	= mchp_spdiftx_dai_probe,
 	.remove	= mchp_spdiftx_dai_remove,
 	.playback = {
-		.stream_name = "S/PDIF TX Playback",
+		.stream_name = "S/PDIF Playback",
 		.channels_min = 1,
 		.channels_max = 2,
 		.rates = MCHP_SPDIFTX_RATES,