ARM: brcmstb: dts: fix NAND nodes names

This matches nand-controller.yaml requirements.
Signed-off-by: NRafał Miłecki <rafal@milecki.pl>
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm7445-bcm97445svmb.dts

@@ -14,10 +14,10 @@
 	};
 };
 
-&nand {
+&nand_controller {
 	status = "okay";
 
-	nandcs@1 {
+	nand@1 {
 		compatible = "brcm,nandcs";
 		reg = <1>;
 		nand-ecc-step-size = <512>;

arch/arm/boot/dts/bcm7445.dtsi

@@ -148,7 +148,7 @@
 			reg-names = "aon-ctrl", "aon-sram";
 		};
 
-		nand: nand@3e2800 {
+		nand_controller: nand-controller@3e2800 {
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;