ASoC: dt-bindings: mediatek,mt8188-afe: add memory-region

Add memory-region property to utilize the reserved memory region.
Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230629074348.21670-3-trevor.wu@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/mediatek,mt8188-afe.yaml

@@ -25,6 +25,12 @@ properties:
   reset-names:
     const: audiosys
 
+  memory-region:
+    maxItems: 1
+    description: |
+      Shared memory region for AFE memif.  A "shared-dma-pool".
+      See ../reserved-memory/reserved-memory.yaml for details.
+
   mediatek,topckgen:
     $ref: /schemas/types.yaml#/definitions/phandle
     description: The phandle of the mediatek topckgen controller
@@ -176,6 +182,7 @@ examples:
         interrupts = <GIC_SPI 822 IRQ_TYPE_LEVEL_HIGH 0>;
         resets = <&watchdog 14>;
         reset-names = "audiosys";
+        memory-region = <&snd_dma_mem_reserved>;
         mediatek,topckgen = <&topckgen>;
         mediatek,infracfg = <&infracfg_ao>;
         power-domains = <&spm 13>; //MT8188_POWER_DOMAIN_AUDIO