ARM: dts: aspeed: ast2600-evb: Enable video engine

Enable video engine and reserve memory for it.
Signed-off-by: Howard Chiu <howard_chiu@aspeedtech.com>
Link: https://lore.kernel.org/r/SG2PR06MB23159B914BF7EF937FEDD2B5E61E9@SG2PR06MB2315.apcprd06.prod.outlook.comSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-ast2600-evb.dts

@@ -23,6 +23,19 @@ memory@80000000 {
 		reg = <0x80000000 0x80000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		video_engine_memory: video {
+			size = <0x04000000>;
+			alignment = <0x01000000>;
+			compatible = "shared-dma-pool";
+			reusable;
+		};
+	};
+
 	vcc_sdhci0: regulator-vcc-sdhci0 {
 		compatible = "regulator-fixed";
 		regulator-name = "SDHCI0 Vcc";
@@ -300,3 +313,8 @@ &sdhci1 {
 	vqmmc-supply = <&vccq_sdhci1>;
 	clk-phase-sd-hs = <7>, <200>;
 };
+
+&video {
+	status = "okay";
+	memory-region = <&video_engine_memory>;
+};