ARM: dts: aspeed: ast2400: Add video engine support

Add a node to describe the video engine on AST2400.

These changes were copied from aspeed-g5.dtsi

Signed-off-by: Alexander Filippov <[e-mail]>
Reviewed-by: Andrew Jeffery <[e-mail]>
Signed-off-by: Joel Stanley <[e-mail]>

arch/arm/boot/dts/aspeed-g4.dtsi

···
 				reg = <0x1e720000 0x8000>;	// 32K
 			};
 
+			video: video@1e700000 {
+				compatible = "aspeed,ast2400-video-engine";
+				reg = <0x1e700000 0x1000>;
+				clocks = <&syscon ASPEED_CLK_GATE_VCLK>,
+					 <&syscon ASPEED_CLK_GATE_ECLK>;
+				clock-names = "vclk", "eclk";
+				interrupts = <7>;
+				status = "disabled";
+			};
+
 			sdmmc: sd-controller@1e740000 {
 				compatible = "aspeed,ast2400-sd-controller";
 				reg = <0x1e740000 0x100>;