ASoC: sun4i-i2s: Add H6 compatible

H6 I2S is very similar to H3, except that it supports up to 16 channels
and thus few registers have fields on different position.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Link: https://lore.kernel.org/r/20201030144648.397824-11-peron.clem@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-i2s.yaml

@@ -24,6 +24,7 @@ properties:
       - items:
           - const: allwinner,sun50i-a64-i2s
           - const: allwinner,sun8i-h3-i2s
+      - const: allwinner,sun50i-h6-i2s
 
   reg:
     maxItems: 1
@@ -59,6 +60,7 @@ allOf:
               - allwinner,sun8i-a83t-i2s
               - allwinner,sun8i-h3-i2s
               - allwinner,sun50i-a64-codec-i2s
+              - allwinner,sun50i-h6-i2s
 
     then:
       required: