ARM: meson: DTS: enable L2 cache

This enables the L2 cache controller available in Amlogic SoCs.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Carlo Caione <carlo@caione.org>

arch/arm/boot/dts/meson8.dtsi

@@ -58,24 +58,28 @@
 		cpu@200 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
+			next-level-cache = <&L2>;
 			reg = <0x200>;
 		};
 
 		cpu@201 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
+			next-level-cache = <&L2>;
 			reg = <0x201>;
 		};
 
 		cpu@202 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
+			next-level-cache = <&L2>;
 			reg = <0x202>;
 		};
 
 		cpu@203 {
 			device_type = "cpu";
 			compatible = "arm,cortex-a9";
+			next-level-cache = <&L2>;
 			reg = <0x203>;
 		};
 	};