ARM: dts: BCM53573: Fix DTC W=1 warnings

Fix the the unit_address_vs_reg warnings and unnecessary
\#address-cells/#size-cells without "ranges" or child "reg" property
warnings.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm47189-luxul-xap-1440.dts

@@ -15,7 +15,7 @@ chosen {
 		bootargs = "earlycon";
 	};
 
-	memory {
+	memory@0 {
 		device_type = "memory";
 		reg = <0x00000000 0x08000000>;
 	};
@@ -38,8 +38,6 @@ system {
 
 	gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		restart {
 			label = "Reset";

arch/arm/boot/dts/bcm47189-luxul-xap-810.dts

@@ -15,7 +15,7 @@ chosen {
 		bootargs = "earlycon";
 	};
 
-	memory {
+	memory@0 {
 		device_type = "memory";
 		reg = <0x00000000 0x08000000>;
 	};
@@ -48,8 +48,6 @@ pcie0_leds {
 
 	gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		restart {
 			label = "Reset";

arch/arm/boot/dts/bcm47189-tenda-ac9.dts

@@ -15,7 +15,7 @@ chosen {
 		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
-	memory {
+	memory@0 {
 		device_type = "memory";
 		reg = <0x00000000 0x08000000>;
 	};
@@ -58,8 +58,6 @@ pcie0_leds {
 
 	gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		rfkill {
 			label = "WiFi";

arch/arm/boot/dts/bcm53573.dtsi

@@ -32,7 +32,7 @@ cpu@0 {
 		};
 	};
 
-	mpcore {
+	mpcore@18310000 {
 		compatible = "simple-bus";
 		ranges = <0x00000000 0x18310000 0x00008000>;
 		#address-cells = <1>;

arch/arm/boot/dts/bcm947189acdbmr.dts

@@ -17,7 +17,7 @@ chosen {
 		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
-	memory {
+	memory@0 {
 		device_type = "memory";
 		reg = <0x00000000 0x08000000>;
 	};
@@ -43,8 +43,6 @@ wps {
 
 	gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		restart {
 			label = "Reset";