arm64: dts: mediatek: mt8186: Add ADSP mailbox nodes

Add ADSP mailbox node for MT8186 SoC.
Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230118091829.755-5-allen-kh.cheng@mediatek.comSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8186.dtsi

@@ -621,6 +621,20 @@ scp: scp@10500000 {
 			interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH 0>;
 		};
 
+		adsp_mailbox0: mailbox@10686000 {
+			compatible = "mediatek,mt8186-adsp-mbox";
+			#mbox-cells = <0>;
+			reg = <0 0x10686100 0 0x1000>;
+			interrupts = <GIC_SPI 361 IRQ_TYPE_LEVEL_HIGH 0>;
+		};
+
+		adsp_mailbox1: mailbox@10687000 {
+			compatible = "mediatek,mt8186-adsp-mbox";
+			#mbox-cells = <0>;
+			reg = <0 0x10687100 0 0x1000>;
+			interrupts = <GIC_SPI 362 IRQ_TYPE_LEVEL_HIGH 0>;
+		};
+
 		nor_flash: spi@11000000 {
 			compatible = "mediatek,mt8186-nor";
 			reg = <0 0x11000000 0 0x1000>;