dt-bindings: pwm: amlogic: Add new bindings for meson A1 PWM

The chip has 3 dual-channel PWM modules PWM_AB, PWM_CD, PWM_EF.
Signed-off-by: George Stark <gnstark@salutedevices.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Acked-by: Conor Dooley <conor@kernel.org>
Link: https://lore.kernel.org/r/20240710234116.2370655-3-gnstark@salutedevices.comSigned-off-by: Uwe Kleine-König <ukleinek@kernel.org>

Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml

@@ -37,6 +37,10 @@ properties:
       - enum:
           - amlogic,meson8-pwm-v2
           - amlogic,meson-s4-pwm
+      - items:
+          - enum:
+              - amlogic,meson-a1-pwm
+          - const: amlogic,meson-s4-pwm
       - items:
           - enum:
               - amlogic,meson8b-pwm-v2
@@ -139,6 +143,16 @@ allOf:
       required:
         - clocks
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,meson-a1-pwm
+    then:
+      required:
+        - power-domains
+
 additionalProperties: false
 
 examples: