ASoC: dt-bindings: add SpacemiT K3 SoC compatible

Add the spacemit,k3-i2s compatible string for the K3 SoC I2S
controller. The K3 I2S IP is the same as K1 but requires additional
clocks: a dedicated sysclk_div clock, along with common_sysclk and
common_bclk which are shared across multiple I2S controllers on K3.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Link: https://patch.msgid.link/20260522-k3-i2s-v3-1-08e3eb811d93@linux.spacemit.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/spacemit,k1-i2s.yaml

@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/sound/spacemit,k1-i2s.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: K1 I2S controller
+title: SpacemiT K1/K3 I2S controller
 
 description:
   The I2S bus (Inter-IC sound bus) is a serial link for digital
@@ -15,27 +15,54 @@ maintainers:
 
 allOf:
   - $ref: dai-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: spacemit,k3-i2s
+    then:
+      properties:
+        clocks:
+          minItems: 7
+        clock-names:
+          minItems: 7
+    else:
+      properties:
+        clocks:
+          maxItems: 4
+        clock-names:
+          maxItems: 4
 
 properties:
   compatible:
-    const: spacemit,k1-i2s
+    enum:
+      - spacemit,k1-i2s
+      - spacemit,k3-i2s
 
   reg:
     maxItems: 1
 
   clocks:
+    minItems: 4
     items:
       - description: clock for I2S sysclk
       - description: clock for I2S bclk
       - description: clock for I2S bus
       - description: clock for I2S controller
+      - description: clock for I2S sysclk divider
+      - description: clock for I2S common sysclk
+      - description: clock for I2S common bclk
 
   clock-names:
+    minItems: 4
     items:
       - const: sysclk
       - const: bclk
       - const: bus
       - const: func
+      - const: sysclk_div
+      - const: c_sysclk
+      - const: c_bclk
 
   dmas:
     minItems: 1