ASoC: dt-bindings: Add bindings for WCD934x DAIs

Add bindings for the DAIs available in WCD934x to avoid
having to use unclear number indices in device trees.

Signed-off-by: Dzmitry Sankouski <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

MAINTAINERS

···
 F:	Documentation/devicetree/bindings/sound/qcom,*
 F:	drivers/soc/qcom/apr.c
 F:	include/dt-bindings/sound/qcom,wcd9335.h
+F:	include/dt-bindings/sound/qcom,wcd934x.h
 F:	sound/soc/codecs/lpass-rx-macro.*
 F:	sound/soc/codecs/lpass-tx-macro.*
 F:	sound/soc/codecs/lpass-va-macro.c

include/dt-bindings/sound/qcom,wcd934x.h

···
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+
+#ifndef __DT_SOUND_QCOM_WCD934x_H
+#define __DT_SOUND_QCOM_WCD934x_H
+
+#define AIF1_PB                 0
+#define AIF1_CAP                1
+#define AIF2_PB                 2
+#define AIF2_CAP                3
+#define AIF3_PB                 4
+#define AIF3_CAP                5
+#define AIF4_PB                 6
+#define AIF4_VIFEED             7
+#define AIF4_MAD_TX             8
+
+#endif