ASoC: dt-bindings: cs35l45: Add interrupts

This chip seems to have an IRQ line, let us describe it.

Signed-off-by: Konrad Dybcio <[e-mail]>
Acked-by: Ricardo Rivera-Matos <[e-mail]>
Acked-by: Krzysztof Kozlowski <[e-mail]>
Link: https://msgid.link/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

Documentation/devicetree/bindings/sound/cirrus,cs35l45.yaml

···
   reg:
     maxItems: 1
 
+  interrupts:
+    maxItems: 1
+
   '#sound-dai-cells':
     const: 1