arm64: dts: Update cache properties for marvell

The DeviceTree Specification v0.3 specifies that the cache node
'compatible' and 'cache-level' properties are 'required'. Cf.
s3.8 Multi-level and Shared Cache Nodes

The recently added init_of_cache_level() function checks
these properties. Add them if missing.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

arch/arm64/boot/dts/marvell/ac5-98dx25xx.dtsi

@@ -49,6 +49,7 @@
 
 		l2: l2-cache {
 			compatible = "cache";
+			cache-level = <2>;
 		};
 	};
 

arch/arm64/boot/dts/marvell/armada-ap806-dual.dtsi

@@ -51,6 +51,7 @@
 			cache-size = <0x80000>;
 			cache-line-size = <64>;
 			cache-sets = <512>;
+			cache-level = <2>;
 		};
 	};
 

arch/arm64/boot/dts/marvell/armada-ap806-quad.dtsi

@@ -81,13 +81,15 @@
 			cache-size = <0x80000>;
 			cache-line-size = <64>;
 			cache-sets = <512>;
+			cache-level = <2>;
 		};
 
 		l2_1: l2-cache1 {
 			compatible = "cache";
 			cache-size = <0x80000>;
 			cache-line-size = <64>;
 			cache-sets = <512>;
+			cache-level = <2>;
 		};
 	};
 };

arch/arm64/boot/dts/marvell/armada-ap807-quad.dtsi

@@ -81,13 +81,15 @@
 			cache-size = <0x80000>;
 			cache-line-size = <64>;
 			cache-sets = <512>;
+			cache-level = <2>;
 		};
 
 		l2_1: l2-cache1 {
 			compatible = "cache";
 			cache-size = <0x80000>;
 			cache-line-size = <64>;
 			cache-sets = <512>;
+			cache-level = <2>;
 		};
 	};
 };