Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/boot/dts/bcm953012er.dts b/arch/arm/boot/dts/bcm953012er.dts
index 17f63c7..9574682 100644
--- a/arch/arm/boot/dts/bcm953012er.dts
+++ b/arch/arm/boot/dts/bcm953012er.dts
@@ -39,14 +39,13 @@
 	model = "NorthStar Enterprise Router (BCM953012ER)";
 	compatible = "brcm,bcm953012er", "brcm,brcm53012", "brcm,bcm4708";
 
-	memory {
+	memory@0 {
+		device_type = "memory";
 		reg = <0x00000000 0x8000000>;
 	};
 
 	gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		wps {
 			label = "WPS";