* Qualcomm Technologies IPQ4019 ASoC SPDIF driver

This node models the Qualcomm Technologies IPQ4019 ASoC SPDIF driver

Required properties:

- compatible	 : "qca,ipq4019-spdif"
- dma-tx-channel : should have the mbox tx channel id
- dma-rx-channel : should have the mbox rx channel id
- stereo-tx-port : should have the stereo tx id
- stereo-rx-port : should have the stereo tx id
- clocks	 : should have the audio tx bit clock, tx master clock,
		   spdif clock, spdif divider clock, spdif in fast clock
- clock-names	 : should be "audio_tx_bclk", "audio_tx_mclk", "audio_spdif_src",
		   "audio_spdif_div2", "audio_spdifinfast_src"

Example:
spdif: spdif@0 {
	compatible = "qca,ipq4019-spdif";
	dma-tx-channel = <MBOX0_TX_ID>;
	dma-rx-channel = <MBOX3_RX_ID>;
	stereo-tx-port = <STEREO0_ID>;
	stereo-rx-port = <STEREO3_ID>;
	clocks = <&adcc ADCC_TXB_CLK_SRC>,
		<&adcc ADCC_TXM_CLK_SRC>,
		<&adcc ADCC_SPDIF_SRC>,
		<&adcc ADCC_SPDIFDIV2_SRC>,
		<&adcc ADCC_AUDIO_SPDIFINFAST_SRC>;
	clock-names = "audio_tx_bclk",
		"audio_tx_mclk",
		"audio_spdif_src",
		"audio_spdif_div2",
		"audio_spdifinfast_src";
	status = "disabled";
};