dt-bindings: dsp: mediatek: Add mt8188 dsp compatible

Add support of the single-core HiFi5 audio DSP on MediaTek MT8188 SoC
for pre- and post- audio processing.
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230110084312.12953-2-tinghan.shen@mediatek.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml

@@ -15,7 +15,9 @@ description: |
 
 properties:
   compatible:
-    const: mediatek,mt8186-dsp
+    enum:
+      - mediatek,mt8186-dsp
+      - mediatek,mt8188-dsp
 
   reg:
     items: