ASoC: codecs: wcd938x: use defines for entries in snd_soc_dai_driver array

snd_soc_dai_driver array in wcd938x driver has two entries whose order
must match order of wcd938x->sdw_priv array.  The wcd938x_bind() and
wcd938x_codec_set_sdw_stream() rely on this order.  wcd938x->sdw_priv
array is indexed by enum with AIF1_PB and AIF1_CAP, so use the same
defines instead of raw numners for snd_soc_dai_driver array.
No functional impact.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231019144108.42853-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wcd938x.c

@@ -3394,7 +3394,7 @@ static const struct snd_soc_dai_ops wcd938x_sdw_dai_ops = {
 };
 
 static struct snd_soc_dai_driver wcd938x_dais[] = {
-	[0] = {
+	[AIF1_PB] = {
 		.name = "wcd938x-sdw-rx",
 		.playback = {
 			.stream_name = "WCD AIF1 Playback",
@@ -3407,7 +3407,7 @@ static struct snd_soc_dai_driver wcd938x_dais[] = {
 		},
 		.ops = &wcd938x_sdw_dai_ops,
 	},
-	[1] = {
+	[AIF1_CAP] = {
 		.name = "wcd938x-sdw-tx",
 		.capture = {
 			.stream_name = "WCD AIF1 Capture",