arm64: dts: mt8183: remove syscon from smi_common node

We don't need to register smi_common as syscon. Also add required
property power-domains for this node.
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20210601040014.2970805-1-hsinyi@chromium.orgSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8183.dtsi

@@ -1263,13 +1263,14 @@ larb0: larb@14017000 {
 		};
 
 		smi_common: smi@14019000 {
-			compatible = "mediatek,mt8183-smi-common", "syscon";
+			compatible = "mediatek,mt8183-smi-common";
 			reg = <0 0x14019000 0 0x1000>;
 			clocks = <&mmsys CLK_MM_SMI_COMMON>,
 				 <&mmsys CLK_MM_SMI_COMMON>,
 				 <&mmsys CLK_MM_GALS_COMM0>,
 				 <&mmsys CLK_MM_GALS_COMM1>;
 			clock-names = "apb", "smi", "gals0", "gals1";
+			power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
 		};
 
 		imgsys: syscon@15020000 {