ARM: dts: r8a7793: Remove unit-address and reg from integrated cache

The Cortex-A15 cache controller is an integrated controller, and thus
the device node representing it should not have a unit-addresses or reg
property.

Fixes: ad53f5f0 ("ARM: dts: r8a7793: Fix W=1 dtc warnings")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7793.dtsi

@@ -65,9 +65,8 @@ cpu1: cpu@1 {
 			power-domains = <&sysc R8A7793_PD_CA15_CPU1>;
 		};
 
-		L2_CA15: cache-controller@0 {
+		L2_CA15: cache-controller-0 {
 			compatible = "cache";
-			reg = <0>;
 			power-domains = <&sysc R8A7793_PD_CA15_SCU>;
 			cache-unified;
 			cache-level = <2>;