Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/arm/boot/dts/bcm947189acdbmr.dts b/arch/arm/boot/dts/bcm947189acdbmr.dts
index ef26341..b0b8c77 100644
--- a/arch/arm/boot/dts/bcm947189acdbmr.dts
+++ b/arch/arm/boot/dts/bcm947189acdbmr.dts
@@ -17,7 +17,8 @@
 		bootargs = "console=ttyS0,115200 earlycon";
 	};
 
-	memory {
+	memory@0 {
+		device_type = "memory";
 		reg = <0x00000000 0x08000000>;
 	};
 
@@ -42,8 +43,6 @@
 
 	gpio-keys {
 		compatible = "gpio-keys";
-		#address-cells = <1>;
-		#size-cells = <0>;
 
 		restart {
 			label = "Reset";