ASoC: dt-bindings: Add FSD I2S controller bindings

Add bindings for FSD CPU DAI driver which supports stereo channel
audio playback and capture on FSD platform.
Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230116103823.90757-2-p.rajanbabu@samsung.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/samsung-i2s.yaml

@@ -37,12 +37,20 @@ properties:
       samsung,exynos7-i2s1: I2S1 on previous samsung platforms supports
       stereo channels. Exynos7 I2S1 upgraded to 5.1 multichannel with
       slightly modified bit offsets.
+
+      tesla,fsd-i2s: for 8/16/24bit stereo channel I2S for playback and
+      capture, secondary FIFO using external DMA, s/w reset control,
+      internal mux for root clock source with all root clock sampling
+      frequencies supported by Exynos7 I2S and 7.1 channel TDM support
+      for playback and capture TDM (Time division multiplexing) to allow
+      transfer of multiple channel audio data on single data line.
     enum:
       - samsung,s3c6410-i2s
       - samsung,s5pv210-i2s
       - samsung,exynos5420-i2s
       - samsung,exynos7-i2s
       - samsung,exynos7-i2s1
+      - tesla,fsd-i2s
 
   '#address-cells':
     const: 1