ASoC: mchp-i2s-mcc: Add compatible for SAMA7G5

Microchip's new SAMA7G5 includes an updated I2S-MCC compatible with the
previous version found on SAM9X60. The new controller includes 8 (4 * 2)
input and output data pins for up to 8 channels for I2S and Left-Justified
formats.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20210301170905.835091-3-codrin.ciubotariu@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/atmel/Kconfig

@@ -127,10 +127,13 @@ config SND_MCHP_SOC_I2S_MCC
 	  Say Y or M if you want to add support for I2S Multi-Channel ASoC
 	  driver on the following Microchip platforms:
 	  - sam9x60
+	  - sama7g5
 
 	  The I2SMCC complies with the Inter-IC Sound (I2S) bus specification
 	  and supports a Time Division Multiplexed (TDM) interface with
 	  external multi-channel audio codecs.
+	  Starting with sama7g5, I2S and Left-Justified multi-channel is
+	  supported by using multiple data pins, output and input, without TDM.
 
 config SND_MCHP_SOC_SPDIFTX
 	tristate "Microchip ASoC driver for boards using S/PDIF TX"

sound/soc/atmel/mchp-i2s-mcc.c

@@ -873,6 +873,9 @@ static const struct of_device_id mchp_i2s_mcc_dt_ids[] = {
 	{
 		.compatible = "microchip,sam9x60-i2smcc",
 	},
+	{
+		.compatible = "microchip,sama7g5-i2smcc",
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, mchp_i2s_mcc_dt_ids);